Touching control panel

Mode of execution

Please reference to Figure 2 and Figure 3. Figure 2 and Figure 3 is a schematic diagram of an embodiment of the invention the touch-control panel, wherein the touch control panel of the embodiment of a touch-sensitive liquid crystal display panel as an example to explain that the characteristic of this invention, but the invention of the application of the touch panel is not limited to this and can also be an independent operation of the touch panel, or integrated with other types of display panel. In addition to highlighting the characteristic feature of the invention Figure 2 shows only a touch panel view of the upper part of the element, and Figure 3 is a schematic diagram of a section of the touch-control panel. As shown in Figure 2 and Figure 3 shows, the embodiment of the touch panel 40, which comprises a 1st substrate (array substrate) 42, a 2nd substrate (color filter substrate) 44, and a liquid crystal layer 46 is arranged on the 1st base plate 42 and the 2nd base plate 44 between. 1st substrate 42 is a transparent substrate, such as glass substrate or quartz substrate, comprises a multi-layer thin film layer thereon: for example 1st metal layer, semiconductor layer, the insulating layer (for example, polycrystalline silicon layer or amorphous silicon layer), the dielectric layer, 2nd metal layer, the protection layer and the transparent conductive layer, and so on, in order to form the liquid crystal display panel of the scanning line, the data line, the thin-film transistor, a pixel, the structure of capacitor necessary, and 1st base plate 42 includes a plurality of non-inductive area 42a, a plurality of induction zones 42b and a plurality of display area 42c. In this embodiment, base plate 1st 42 in a non-sensing zone 42a has a 1st thickness, and the sensing area 42b has a thickness 2nd, 2nd and 1st the thickness is larger than the thickness of a thickness difference is formed, wherein the non-sensing zone 42a of the thickness of the induction zone 1st 42b of which is the thickness of the 2nd to 1st base plate 42 on the non-sensing zone 42a of the total thickness of each thin film layer with the sensing area 42b of the total thickness of each thin film layer reached by the different. In this embodiment, for example, in the non-inductive area 42a in the plate 1st 42 are sequentially stacked on a gate electrode layer (metal layer 1st) 48a, a gate insulating layer 48b, a semi-conductor layer 48c, a source electrode/drain layer (metal layer 2nd) 48d and a protective layer 48e, in the induction zone and 42b in the plate 1st 42 stacked only on a gate insulating layer 48b, a protective layer 48e and 1st conductive layer (transparent conductive layer) 50, in this embodiment of the thickness and 1st 2nd to thickness difference between thickness of the gate electrode layer 48a plus the thickness of the semiconductor layer 48c with the thickness of the source/drain layer minus 1st conductive pattern 50b thickness. In addition by fig. 3 can know, 1st base plate 42 in the inductive area 42b presents a smooth structure, and 1st base plate 42 in the non-sensing zone 42a then presents a bump structure. Worthy of note that the embodiment is in a non-sensing zone 42a forming a gate electrode layer 48a, a gate insulating layer 48b, semiconductor layer 48c, the source/drain layer 48d, and 48e, and in the induction area 42b forming a gate insulating layer 48b, protective layer 48e and 1st conductive layer 50, in order to achieve the non-sensing zone 42a and the induction area 42b thickness difference, but the application of the present invention is not limited to this, and can utilize the alter the above-mentioned thin film layer with the above-mentioned or select the position of the different embodiment of the thin film layer of non-induction to 42a and the induction area 42b form the thickness difference.

On the other hand, 2nd base plate 44 is also a transparent substrate, which comprises a color filter layer 52, [...] matrix 54, a plurality of 1st photoresist spacer 56a, a plurality of 2nd photoresist spacer 56b and a 2nd conductive layer 58, wherein the 1st photoresist spacer 56a and 2nd light of spacers 56b is formed by elastic material. In this embodiment the color filter layer 52 corresponding to the display area 42c, black matrix 54 corresponding to the sensing area 42b and non-inductive area 42a, 1st photoresist spacer 56a corresponding to the non-sensing zone 42a, 2nd photoresist spacer 56b corresponding to the sensing area 42b, and 2nd conductive layer 58 is fixed to the color filter 52, the black matrix 54 and 2nd light of spacers 56b surface, wherein the 2nd conductive layer 58 is a transparent conductive layer, which also is a liquid crystal display panel common electrode layer. Worthy of note is that in this embodiment, conducting layer 2nd 58 and for 1st photoresist spacer 56a surface, the practice of this invention, however, is not limited to this, other embodiment, the 2nd conductive layer 58 can also be not covering the 1st photoresist spacer 56a surface.

1st photoresist spacer 56a and 2nd light of spacers 56b has the same height, contribute to the accuracy of the height of the spacer, reducing the height error, and can simplify the process complexity. Wherein the 1st photoresist spacer 56a corresponding to the non-sensing zone 42a, and 2nd light of spacers 56b corresponding to the induction, 42b. As mentioned above, because the 1st base plate 42 in a non-inductive area 42a in the induction of a thickness greater than 1st 42b of the thickness of the 2nd, 1st therefore the photoresist spacer 56a on the structure are respectively connected with the 1st base plate 42 of the non-inductive area 42a under the condition of, corresponding to the sensing area 42b of the photoresist spacer 2nd 56b will not be and 1st base plate 42 contact, with the 1st base plate 42 a distance 1st h1.

This embodiment's 1st conductive layer 50 includes a plurality of 1st conductive pattern 50b respectively arranged on each sensing area 42b within, and 1st conductive pattern 50b and display area 42c of the pixel electrode 50c by the same layer of the transparent conductive layer, the conductive pattern 1st 50b and the corresponding 2nd conductive layer 58 to form a sensing element. Furthermore, touch panel 40 includes a plurality of other direction along a 1st (Figure 2 in the horizontal direction) of the scanning line 60, a plurality of along a 2nd direction (Figure 2 in the vertical direction of) the data line 62, and 2nd multi-section and are arranged in the direction along the data line 62 the signal read line is 64. Two adjacent scanning lines 60 and the adjacent two data lines 62 define a display area 42c, two adjacent scanning lines 60 and the adjacent two signal read line 64 defines a sensing area 42b, and non-inductive area 42a is located in a sensing area 42b of the peripheral position. Each display region 42c is provided with a switch element (thin film transistor) 66c, its grid and scanning line 60 is electrically connected with, the source electrode and the data line 62 is electrically connected, so as to control the display area 42c operation. Each sensing area 42b is provided with a switch element (thin film transistor) 66b, its grid and scanning line 60 is electrically connected with, source and 1st conductive pattern 50b is electrically connected, the drain the signal read line 64 electrically connected, wherein the signal read line 64 reading the role of the signal of the sensing element, for example, including reading the 1st conductive layer 50 of conductive pattern 1st 50b and 2nd conductive layer 58 of a change in capacitance between signal, or reading 1st conductive layer 50 of conductive pattern 1st 50b and 2nd conductive layer 58, such as whether the signal of the contact.

In this embodiment the touch-control panel 40 in the framework of, 1st base plate 42 of the non-inductive area 42a 1st thickness is greater than induction of 42b of the thickness of the 2nd, and 2nd base plate 44 of the 1st photoresist spacer 56a and 2nd light of spacers 56b have the same height, and 1st photoresist spacer 56a on the structure is connected with the 1st base plate 42 of the non-inductive area 42a, in normal conditions, the 1st photoresist spacer 56a can make the 1st base plate 42 and the 2nd base plate 44 to maintain a certain gap, and 2nd light of spacers 56b will not and 1st base plate 42 contact, and so as to set up the 1st base plate 42 on the conductive pattern 1st 50b is provided on the 2nd base plate 44 of the corresponding 2nd conductive layer 58 to keep the fixed capacitance value of between.

Please re-reference Figure 4, and comparing Figure 3. Figure 4 is a schematic diagram of the embodiment of the touch panel is pressed. As shown in Figure 4, when the finger or other tool pressing the touch-sensitive panel 40 2nd substrate of 42 when the surface (display surface), the induction in the pressing position of the base plate 42b 1st 42 to generate deformation, so that the 1st base plate 42 and the 2nd base plate 44 between the reduced into 1st distance h1a, the status of the pressing force will be located even under the pressing position the inductive area 42b of the 2nd conductive layer 58 and the corresponding 1st conductive pattern 50 phase contact, and the change of the distance between the 1st delta (h1-h1a) state will be the reaction on the change of the capacitance, and the capacitance value to change area measure will be sensing element, and is pressed from the inductive area 42b of the position signal. Of course, this invention in addition to the above change in capacitance can be utilized to detect the position, can also be applied to the 2nd conductive layer 58 and the corresponding 1st conductive pattern 50 phase contact, the generated voltage or current to detect the pressing position.

In addition to the above implementation of the exception, other touch panel of this invention includes the following various embodiments, different in order to compare the differences of the embodiment of, in the following embodiment the same element using the same label-indexed, and the structure of the same part is no longer more repeat, and an explanation of the differences only. Please refer to the fig. 5. Figure 5 is a schematic diagram of another embodiment of the invention the touch-control panel. Such as 5 shown, of the embodiment with the touch panel that is different from the aforesaid embodiment 2nd conductive layer 58 does not cover the 1st photoresist spacer 56a surface, such as the aforesaid embodiment and not the 2nd conductive layer 58 is covered with photoresist object 1st 56a approach of the surface.

Please refer to the fig. 6. Figure 6 is shown the camera of the present invention and one embodiment of the touch panel. As shown in Figure 6, in this embodiment non-sensing zone 42a of the 1st base plate 42 includes a grid electrode layer 48a, a gate insulating layer 48b and a protective layer 48e, and sensing area 42b of the 1st base plate 42 comprises a only on the gate electrode layer 48a and a 1st conductive pattern 50b, thus non-inductive area 42a is larger than the thickness of the induction zone 1st 42b of the thickness of the 2nd, 2nd and 1st the thickness of the thickness of the gate insulating layer is bad for 48b plus protective layer 48e minus 1st the thickness of the conductive pattern 50b thickness. In addition by fig. 6 can be known, 1st base plate 42 in the non-sensing zone 42a presents a smooth structure, compared with the induction zone under 42b then presents a concave structure.

On the other hand, 2nd base plate 44 of the 1st photoresist spacer 56a and 2nd light of spacers 56b has the same height the same, thus the 1st photoresist spacer 56a on the structure are respectively connected with the 1st base plate 42 of the non-inductive area 42a under the condition of, corresponding to the sensing area 42b of the photoresist spacer 2nd 56b will also meet with the 1st base plate 42 h1 keep a 1st interval, so that the conductive pattern 1st 50b and 2nd conductive layer 58 a is formed between the sensing element.

Please refer to the Figure 7 and Figure 8. Figure 7 is a schematic diagram of a section of another embodiment of the present invention of a schematic diagram of the touch panel, wherein the diagram 7 display the part of the element of the touch panel of the upper view, and Figure 8 is a touch panel. As shown in Figure 7 and Figure 8 shows, the embodiment of the touch panel 2nd base plate 44 from the 1st photoresist spacer 56a and 2nd light of spacers 56b outside, includes a plurality of other 3rd photoresist spacer 56c, corresponding to the 1st base plate 42 the inductive area 42b. 1st photoresist spacer 56a, 2nd photoresist spacer 56b and 3rd photoresist spacer 56c are provided with the same height, and is best made of elastic material. Wherein the 2nd photoresist spacer 56b is covered with the surface of the conducting layer 2nd 58, and 1st photoresist spacer 56a and 3rd photoresist spacer 56c surface of a can be selectively covered or not covered with a 2nd conductive layer 58.

Furthermore, 1st base plate 42 of the non-inductive area 42a in addition outside of the original thickness of the 1st, 3rd photoresist spacer, the corresponding 56c with a thickness of the position of the 3rd, and 3rd 1st 2nd thickness between the thickness of the thickness. In this embodiment, corresponding to the 1st photoresist spacer 56a of the 1st base plate 42 is provided with a gate electrode layer 48a, a gate insulating layer 48b, a semi-conductor layer 48c, a source electrode/drain layer 48d and a protective layer 48e, in the sensing area 42b should be 2nd the photoresist spacer 56b of the 1st base plate 42 stacked only on a gate insulating layer 48b, a protective layer 48e and a 1st conductive layer 50, in the non-sensing zone 42a should be 3rd photoresist spacer to 56c of the 1st base plate 42 is provided with a gate electrode layer 48a, a gate insulating layer 48b and a protective layer 48e. Because the corresponding 1st photoresist spacer 56a of base plate 1st 42 thickness of the thickest, and the photoresist spacer should be 2nd 56b of base plate 1st 45 the most thin, when the 1st base plate 42 and the 2nd base plate 44 of the combination, 1st photoresist spacer 56a on the structure with the 1st base plate 42 is connected with the, 2nd photoresist spacer 56b and the 1st base plate 42 h1 a distance 1st, 3rd photoresist spacer, and 56c will and 1st base plate 42 h2 maintain a distance between the 2nd, and 2nd spacing h2 h1 less than 1st interval (h2 < h1). As mentioned above, when pressing the 2nd base plate 44, , 2nd base plate 44 will be deformed so as to produce the change in the capacitance value, if the pressure is too large may cause to 2nd base plate 44 to the excessive deformation of the touch panel 40 from being damaged, thus 3rd photoresist spacer 56c can provide the role of the touch panel in 40 an auxiliary force, when the pressing force of the 3rd reaches a certain extent after the photoresist spacer 56c and the 1st base plate 42 to provide a contact force, and at this moment 2nd base plate 44 of the pressing point has also produce a certain degree of deformation that the inductive element can be induced by the change of the capacitance value.

Please senate reference Figure 9. Figure 9 is an upper view of another embodiment of the present invention of a schematic diagram of the touch panel, wherein the diagram 9 display the part of the element of the touch panel. The Figure 7 embodiment of this embodiment is characterized in that the touch-control panel is a contact-type touch panel (for example, resistive), therefore, 1st base plate 42 corresponding to the 3rd photoresist spacer 56c corresponding to the 3rd to 2nd is smaller than the thickness of the photoresist spacer 56b of the thickness of the 2nd, and 1st is still the largest thickness (i.e. 1st thickness greater than the thickness of a thickness greater than 2nd 3rd). In this state, 2nd photoresist spacer 56b and 1st base plate 42 h1 1st interval of less than 3rd photoresist spacer 56c and 1st base plate 42 of the distance between the 2nd h2 (h2 < h1). When pressing the 2nd base plate 44, , 2nd base plate 44 will be deformed so that the 2nd photoresist spacer 56b of the 2nd conductive layer 58 and 1st conductive pattern 50b contact, and in the 3rd photoresist spacer 56c as the function of the auxiliary support, in order to avoid the 2nd base plate 44 or other components because the pressure caused by too large to excessive deformation or damaged.

In every embodiment of this invention, 1st photoresist spacer 56a, 2nd photoresist spacer 56b or 3rd photoresist spacer 56c using the same forming a yellow light process, therefore, does not need to increase the extra process can form, and its layout visual structural strength requirements or different design of the inductive element to be change, but is not limited to the above-mentioned embodiment of the method is disclosed.

Please continue reference to Figure 10, together with reference to fig. 2 to fig. 8. Figure 10 is a schematic diagram of the circuit of the present invention embodiment of a touch panel. As shown in Figure 10, the touch panel 40 in, the sensing area 42b of the conductive pattern 1st 50b and 2nd conductive layer 58 to form a variable capacitance 70, when a sensing area 42b is pressed, variable capacitance 70 is changed, in other words, the capacitance value of the signal will be generated and transmitted to a variable capacitor 70, the effect of the touch input. Worthy of note is the circuit design of the touch panel is not limited to this, but can be other suitable circuit design, if, for example, the touch panel 9 embodiment of the contact, such as resistive, it should be matched with suitable circuit design.

By the above-mentioned can be seen, touch control panel of the present invention with the same height of the photoresist spacer, but by making the 1st the base plate in the induction area and non-sensing zone has a different thickness (by changing the original each of the thin film layer arimitsu cover pattern), that is, without any increase in the case of process steps to form a touch-controlled liquid crystal display panel. Furthermore, the touch panel of the present invention the sensing zone are provided with a switch element, so as to be capable of providing multi-point input function, and can improve the known can only touch panel of the single-point input.

To sum up, touch control panel of this invention has a simplified structure, does not need any increase of the existing technology, the control only by means of the existing liquid crystal display panel is a thin film layer can be formed the thickness of the sensing element, thereby not only does not need the extra cost, more can increase the uniformity of the inductive element.

The stated above is a preferable embodiment of the present invention, where a claim in accordance with this invention are done by the change and modification, should be within the scope of the invention.