CN101359112A - Touch Display Panel - Google Patents

Abstract

A touch display panel comprises a first substrate, a second substrate, a sealant, a liquid crystal layer, a main gap object, a first induction gap object, a second induction gap object, a first opposite electrode and a second opposite electrode. The first substrate has a central region and a peripheral region, and the second substrate is opposite to the first substrate. The first sensing spacers are located in a central region between the first and second substrates, and the second sensing spacers are located in a peripheral region between the first and second substrates. The first counter electrode is arranged corresponding to the first sensing gap object, and a first sensing gap is formed between the first sensing gap object and the first counter electrode. The second counter electrode is arranged corresponding to the second induction gap object, and a second induction gap is formed between the second induction gap object and the second counter electrode. The first sensing gap is larger than the second sensing gap.

Description

Touch Display Panel

technical field

The present invention relates to a display panel, and in particular to a touch display panel.

Background technique

Among numerous consumer optoelectronic devices, displays are currently one of the most popular consumer optoelectronic devices. With the advancement of display technology, people make life more convenient with the assistance of displays, among which the design of touch-sensitive displays is the most convenient feature. The user can execute various functions of the touch-sensitive display by directly touching the display screen of the touch-sensitive display, thus simplifying the operation complexity of the user.

Generally speaking, according to the structural composition of the touch-sensitive display, the touch-sensitive display can be divided into two types: plug-in type and built-in type. Since products with built-in structure design are lighter and thinner than those with externally mounted structure design, built-in touch displays are often used in various portable electronic devices.

FIG. 1A is a schematic partial cross-sectional view of a known built-in touch display panel. 1A, the built-in touch display panel 100 includes a first substrate 110, a second substrate 120, a liquid crystal layer 140, a main spacer 150, a sensing spacer 160, a counter electrode 170, a transparent conductive layer 182, and a light shielding layer. 184 , a plurality of color filter layers 184 ′, a protection layer 186 , a first metal layer M1 , a gate insulating layer GI′, an amorphous silicon layer AS, and a second metal layer M2 .

The second substrate 120 is located opposite to the first substrate 110 , and the liquid crystal layer 140 and the main spacer 150 are located between the first substrate 110 and the second substrate 120 . The sensing spacer 160 is located on the second substrate 120 , and the counter electrode 170 is located on the first substrate 110 and corresponding to the sensing spacer 160 , wherein the counter electrode 170 is disposed above and in contact with the protective layer 186 . The transparent conductive layer 182 is located on the second substrate 120 and covers the main spacers 150 and the sensing spacers 160 .

Generally speaking, the method of forming the main spacer 150 and the sensing spacer 160 is to use one mask process to complete the fabrication of the main spacer 150 and the sensing spacer 160 at the same time. However, due to the limitation of the photolithography process, the difference between the height of the sensing spacer 160 and the height of the main spacer 150 is not large.

Please continue to refer to FIG. 1A , when the built-in touch display panel 100 is not touched, the shortest distance between the transparent conductive layer 182 covering the sensing spacer 160 and the opposite electrode 170 is a sensing gap g'. When the user touches the built-in touch display panel 100 , the transparent conductive layer 182 covering the sensing spacer 160 and the opposite electrode 170 will produce electrical changes due to contact, so the built-in touch display panel 100 The user's touch position can be judged by the electrical change.

However, each sensing gap on the traditional built-in touch display panel 100 is g′, therefore, when the user touches an area with low sensing sensitivity, it needs to apply a larger force to make the sensing The transparent conductive layer 182 on the spacer 160 is in contact with the opposite electrode 170 , that is, the sensing gap g′ is equal to zero. However, once the user exerts excessive pressure on the built-in touch display panel 100 , the transparent conductive layer 182 will break, as shown at the breaks B1 and B2 in FIG. 1B .

Contents of the invention

The invention provides a touch-sensitive display panel. The touch-sensitive display panel is provided with sensing gaps of various heights, which can improve the area of the touch-sensitive display panel with low touch sensitivity.

The present invention further provides a touch display panel. The touch display panel has sensing gaps of various sizes, which can improve areas with poor touch sensitivity.

The present invention further provides a touch display panel. The touch display panel adopts organic conductive materials to make sensing spacers, so as to facilitate adjustment of the height of the sensing spacers and the size of the sensing gaps.

The present invention proposes a touch display panel, which includes a first substrate, a second substrate, a sealant, a liquid crystal layer, a main spacer, a first sensing spacer, a second sensing spacer, a second sensing spacer, and a second sensing spacer. A pair of opposite electrodes and a second opposite electrode. The first substrate has a central area and a peripheral area, and the second substrate is located opposite to the first substrate. The sealant is located in the peripheral area and is used for adhering the first substrate and the second substrate together. The liquid crystal layer, the main spacer, the first sensing spacer and the second sensing spacer are all located between the first substrate and the second substrate; wherein, the first sensing spacer is located in the central area, and the second sensing spacer is located at the periphery within the area. The first counter electrode is disposed corresponding to the first sensing spacer, and there is a first sensing gap between the first sensing spacer and the first counter electrode. The second counter electrode is disposed corresponding to the second sensing spacer, and there is a second sensing gap between the second sensing spacer and the second counter electrode. The first sensing gap is larger than the second sensing gap.

The present invention further provides a touch display panel, which includes a first substrate, a second substrate, a sealant, a liquid crystal layer, a main spacer, a first sensing spacer, and a second sensing spacer. The first substrate has a central area and a peripheral area, and the second substrate is located opposite to the first substrate. The sealant is located in the peripheral area and is used for adhering the first substrate and the second substrate together. The liquid crystal layer, the main spacer, the first sensing spacer and the second sensing spacer are all located between the first substrate and the second substrate; wherein, the first sensing spacer is located in the central area, and the second sensing spacer is located at the periphery within the area. The second sensing spacer is higher than the first sensing spacer.

The present invention further provides a touch display panel, which includes a first substrate, a second substrate, a sealant, a liquid crystal layer, a main spacer and a sensing spacer. The second substrate is located opposite to the first substrate. The sealant is used for adhering the first substrate and the second substrate together. The liquid crystal layer and the main spacer are located between the first substrate and the second substrate. The sensing spacer is located on the first substrate or the second substrate, and the sensing spacer can be composed of multiple organic conductive layers.

In an embodiment of the touch display panel of the present invention, at least one of the first sensing spacer and the second sensing spacer is composed of multiple organic conductive layers.

In an embodiment of the touch display panel of the present invention, at least one of the first counter electrode and the second counter electrode is composed of multiple organic conductive layers.

In an embodiment of the touch display panel of the present invention, the range of the first sensing gap and the second sensing gap is between 0.3 micrometer (μm) and 0.8 micrometer (μm).

In an embodiment of the touch display panel of the present invention, at least one of the first sensing spacer and the second sensing spacer has a spherical tip or a blunt tip.

In an embodiment of the touch display panel of the present invention, the first sensing spacer and the second sensing spacer are disposed on the transparent conductive layer and are in contact with the transparent conductive layer.

In an embodiment of the touch display panel of the present invention, the touch display panel further includes a first light shielding layer, a second light shielding layer and a third light shielding layer, and the first light shielding layer, the second light shielding layer and the third light shielding layer The layer is on the second substrate. In one embodiment, the first light-shielding layer, the second light-shielding layer and the third light-shielding layer are respectively disposed corresponding to the first sensing spacer, the second sensing spacer and the main spacer.

In an embodiment of the touch display panel of the present invention, the touch display panel further includes a protective layer and a plurality of transparent electrodes, the aforementioned protective layer is located on the first substrate, and the transparent electrodes are located on the protective layer, And are set corresponding to the first sensing spacer and the second sensing spacer respectively. In a preferred embodiment, the first counter electrode and the second counter electrode are respectively disposed on the transparent electrodes.

In one embodiment of the touch display panel of the present invention, the material of the organic conductive layer can be selected from 3,4-ethylenedioxythiophene/polysulfonated styrene (poly(3,4-ethylene dioxythiophene)/poly(styrenesulfonate ), PEDOT/PSS), polyaniline, polypyrrole, polythiophene, polyacetylene, polyphenylene, polyfuran, polyselenophene, polyisothiophene Naphthol, polyphenylsulfide, polystyrene, polythianethylene, polynaphthalene, polyanthracene, polypyrene, polyazulene, phthalocyanine, pentanocene, hemicyanine dye and at least one of polyethylenedioxythiophene.

The touch display panel of the present invention can use the inkjet process technology to manufacture the sensing spacers, so as to adjust the heights of different sensing spacers at the same time. In addition, the present invention can utilize sensing spacers with different heights to improve the problem of poor touch sensing sensitivity in the peripheral area of the touch display panel. From another point of view, sensing gaps of different sizes can also be used to improve the touch sensing sensitivity of the peripheral area of the touch display panel. In addition, the above-mentioned means in this case can not only solve the problem of poor sensitivity in the peripheral area of the touch-sensitive display panel in the known technology, but also further avoid the breakage of the transparent conductive layer caused by excessive pressure on the panel by the user.

Description of drawings

FIG. 1A is a partial cross-sectional schematic diagram of a known built-in touch display panel.

FIG. 1B is a schematic partial cross-sectional view of the built-in touch display panel shown in FIG. 1A being damaged due to excessive pressure.

FIG. 2A is a schematic partial cross-sectional view of the first embodiment of the touch display panel of the present invention.

2B is a schematic partial cross-sectional view of a second embodiment of the touch display panel of the present invention.

3A is a schematic partial cross-sectional view of a third embodiment of the touch display panel of the present invention.

3B is a schematic partial cross-sectional view of a fourth embodiment of the touch display panel of the present invention.

Reference number

100, 200, 300: built-in touch display panel

110, 210: the first substrate

120, 220: second substrate

140, 240: liquid crystal layer

150, 250: main spacer

160, 260: sensing gap

170, 270: Counter electrode

182, 282, 382: transparent conductive layer

184, 284: shading layer

184', 284', 384: color filter layer

186, 286, 386: protective layer

230: sealant

260c: Organic conductive layer

290: transparent electrode

312: Central area

314: Surrounding area

360a: first sensing gap

360b: Second sensing spacer

370a: first counter electrode

370b: second counter electrode

384a: first light-shielding layer

384b: second light-shielding layer

384c: third shading layer

390a: first transparent electrode

390b: second transparent electrode

AS: Amorphous silicon layer

B1, B2: Fractures

d, 2d, 3d, 4d, 5d: height

D: Gap

DL: data line

g': sensing gap

g1: first sensing gap

g2: the second sensing gap

GI: Gate insulating layer

GI’: gate insulating layer

M1: first metal layer

M2: second metal layer

Detailed ways

In order to make the above-mentioned features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

FIG. 2A is a schematic partial cross-sectional view of the first embodiment of the touch display panel of the present invention. 2A, the touch display panel 200 of this embodiment includes a first substrate 210, a second substrate 220, a sealant 230, a liquid crystal layer 240, a main spacer 250, a sensing spacer 260, a transparent electrode 290 and an opposite electrode 270 .

A pixel array is disposed on the first substrate 210, wherein the pixel array includes a plurality of active devices, a plurality of scan lines, a plurality of data lines DL and a plurality of pixel electrodes. For the convenience of description, only one data line DL is shown in FIG. 2A , and other components are omitted. However, any person skilled in the technical field of the present invention should be able to judge the actual position and function of the omitted components, so it will not be repeated here. Explain one by one. It can be seen from FIG. 2A that the data line DL is disposed above the gate insulating layer GI. The second substrate 220 is located opposite to the first substrate 210 . The sealant 230 is used to adhere the first substrate 210 and the second substrate 220 together. The liquid crystal layer 240 and the main spacer 250 are located between the first substrate 210 and the second substrate 220 . The sensing spacer 260 is located on the second substrate 220 .

In a preferred implementation manner, the opposite electrode 270 and the transparent electrode 290 are located on the first substrate 210 and are arranged corresponding to the sensing spacers 260. As shown in FIG. 2A, the opposite electrode 270 is disposed on the data line DL and the gate Above the insulating layer GI, the transparent electrode 290 is located between the opposite electrode 270 and the data line DL, but the present invention is not limited to this embodiment. The designer can arrange the opposite electrode 270 above the scanning line (not shown) or other components suitable for disposing the opposite electrode 270 according to the requirements of the product, or arrange the opposite electrode 270 between the transparent electrode 290 and the data line between DLs, scanlines, or other components.

In a preferred embodiment, the transparent electrode 290 is electrically connected to the opposite electrode 270, and is used to transmit an electric current generated by the contact between the sensing spacer 260 and the opposite electrode 270 when the user touches the touch display panel 200. A sexual change or an induction signal. In addition, the designer can also appropriately change the pattern of the counter electrode 270 according to the requirements of the product to replace the function of the transparent electrode 290 and further simplify the process.

Referring to FIG. 2A , a transparent conductive layer 282 is further disposed on the second substrate 220 , and the sensing spacer 260 is disposed on the transparent conductive layer 282 and is in contact with the transparent conductive layer 282 . In a preferred embodiment, a light-shielding layer 284 is disposed on the second substrate 220 correspondingly to the sensing spacer 260 and the main spacer 250 . A plurality of color filter layers 284' are further disposed on the second substrate 220, and the color filter layers 284' and the light shielding layers 284 are alternately arranged. A protective layer 286 is further disposed on the first substrate 210 , and the opposite electrode 270 is disposed on the protective layer 286 and contacts the protective layer 286 or the transparent electrode 290 on the protective layer 286 .

As shown in FIG. 2A , the transparent conductive layer 282 can be electrically connected to the sensing spacer 260 and electrically insulated from the opposite electrode 270 when not in operation. When the user touches the touch-sensitive display panel 200, the sensing spacer 260 and the opposite electrode 270 will produce an electrical change due to the contact, and the touch-sensitive display panel 200 can use the electrical change to determine the user's Touch location. In short, the sensing spacers 260 and the opposite electrodes 270 are respectively disposed on the second substrate 220 and the first substrate 210 in a corresponding manner, and can be used to sense the touch position on the touch display panel 200 .

The sensing spacer 260 may be composed of multiple organic conductive layers 260c. Generally speaking, the material of the organic conductive layer 260 c is usually a soft conductive material. Therefore, the organic conductive layer 260 c helps to ease the force generated when the sensing spacer 260 is in contact with the opposite electrode 270 .

In a preferred embodiment, the material of the organic conductive layer 260c can be selected from 3,4-ethylenedioxythiophene/polystyrene sulfonate (PEDOT/PSS), polyaniline, polypyrrole, Polythiophene, polyacetylene, polyphenylene, polyfuran, polyselenophene, polyisothionaphthol, polyphenylene sulfide, polystyrene, polythianethylene, polynaphthalene, polyanthracene, polypyrene, polyazulene, At least one of phthalocyanine, pentanocene, hemicyanine dye and polyethylene dioxythiophene, but the present invention is not limited to this embodiment.

Since the sensing spacer 260 is a soft organic conductive material, the sensing spacer 260 can be gradually formed on the second substrate 220 by using ink jet technology. In addition, by controlling the dose and frequency of the organic conductive material ejected by each inkjet process, the height of the sensing spacer 260 can be made to reach a predetermined value or within an expected range.

As shown in FIG. 2A, the first inkjet process on the second substrate 220 can form an organic conductive layer 260c with a height d, and the second inkjet process can form two organic conductive layers with a height d. 260c, the sum of its heights is 2d. By analogy, it can be seen that after the fourth inkjet process, four organic conductive layers 260c can be obtained, and the sum of their heights is 4d. In this embodiment, the sensing spacer 260 is composed of four organic conductive layers 260c, and the height of the sensing spacer 260 is 4d.

In practical applications, the organic conductive layer 260c is not limited to four layers, and the designer can also properly adjust the dose and frequency of the organic conductive material ejected by the inkjet process according to the requirements of the product, so as to control the organic conductive layer 260c. layers and height. In addition, other manufacturing methods or other inkjet control methods can also be used to manufacture the sensing spacer 260, as long as the shape or height of the sensing spacer 260 can be controlled; The height of the organic conductive layer 260c formed by the ink process.

In a preferred embodiment, the material of the above-mentioned organic conductive layer 260c can also be used together with the above-mentioned inkjet process technology to make the counter electrode 270, so that the height of the counter electrode 270 can meet the design requirements, but this The invention is not limited to this embodiment. Generally speaking, the opposite electrode 270 can be a single-layer conductive layer, so it can also be made of inorganic conductive materials, and the present invention is not limited to the material of the above-mentioned organic conductive layer 260c.

The sensing spacer 260 can also be fabricated on the first substrate 210, while the counter electrode 270 is fabricated on the second substrate 220 and arranged corresponding to the sensing spacer 260, wherein the sensing spacer 260 is made of an organic conductive material, such as Figure 2B.

2B is a schematic partial cross-sectional view of a second embodiment of the touch display panel of the present invention. As can be seen from FIG. 2B , the sensing spacer 260 is disposed above the protection layer 286 and the transparent electrode 290 , and is in electrical contact with the transparent electrode 290 . In addition, the opposite electrode 270 or the transparent electrode 290 may be an organic conductive material or an inorganic conductive material. The organic conductive material is as described above, and will not be repeated here.

In this embodiment, the sensing spacer 260 is fabricated by using an organic conductive material together with inkjet technology or other manufacturing methods, and the height of the sensing spacer 260 can be easily adjusted. In addition, if it is desired to further adjust the height of the opposite electrode 270 , the opposite electrode 270 may also be formed by using an organic conductive material in combination with inkjet technology or other manufacturing methods.

FIG. 3A is a schematic partial cross-sectional view of a third embodiment of the touch display panel of the present invention. 3A, the touch display panel 300 of this embodiment includes: a first substrate 210, a second substrate 220, a sealant 230, a liquid crystal layer 240, a main spacer 250, a first sensing spacer 360a, a second sensing Spacer 360b, first counter electrode 370a, second counter electrode 370b, transparent conductive layer 382, first light shielding layer 384a, second light shielding layer 384b, third light shielding layer 384c, first transparent electrode 390a, second transparent electrode 390b and protective layer 386 .

The first substrate 210 has a central region 312 and a peripheral region 314 . In addition, the pixel array is configured on the first substrate 210, wherein the pixel array includes a plurality of active elements, a plurality of scan lines, a plurality of data lines DL and a plurality of pixel electrodes. For the convenience of description, only the data line DL is shown in FIG. 3A , and other components are omitted; however, any person skilled in the technical field of the present invention should know the actual positions and functions of the omitted components, and will not be described one by one here. . It can be seen from FIG. 3A that the data line DL is disposed above the gate insulating layer GI.

The second substrate 220 is located opposite to the first substrate 210 . The sealant 230 is located in the peripheral area 314 and is used for adhering the first substrate 210 and the second substrate 220 together. The liquid crystal layer 240 , the main spacer 250 , the first sensing spacer 360 a and the second sensing spacer 360 b are all located between the first substrate 210 and the second substrate 220 .

In this embodiment, the first sensing spacer 360a and the second sensing spacer 360b are disposed on the second substrate 220, wherein the first sensing spacer 360a and the main spacer 250 are located in the central region 312, and the second sensing gap The object 360b is located within the peripheral area 314 . The first counter electrode 370a and the first transparent electrode 390a are disposed in the central region 312 on the first substrate 210 and correspond to the first sensing spacer 360a. The second counter electrode 370b and the second transparent electrode 390b are disposed in the peripheral area 314 on the first substrate 210 and correspond to the second sensing spacer 360b.

The first opposite electrode 370a, the first transparent electrode 390a, the second opposite electrode 370b and the second transparent electrode 390b are all arranged above the data line DL and the gate insulating layer GI, the first transparent electrode 390a and the second transparent electrode 390b are respectively disposed between the first opposite electrode 370a, the second opposite electrode 370b and the corresponding data line DL. However, the designer may arrange the first counter electrode 370a and the second counter electrode 370b above the scanning line (not shown) or other suitable arrangement for the first counter electrode 370a and the second counter electrode 370a according to the requirements of the product. On the member of the electrode 370b, or the first counter electrode 370a and the second counter electrode 370b are arranged between the first transparent electrode 390a, the second transparent electrode 390b and the data line DL, the scan line or other components.

In a preferred embodiment, the first transparent electrode 390a and the second transparent electrode 390b are electrically connected to the first opposite electrode 370a and the second opposite electrode 370b respectively, and are used to transmit When the first sensing spacer 360a and the second sensing spacer 360b are in contact with the first opposing electrode 370a and the second opposing electrode 370b respectively, electrical changes or sensing signals are generated. In addition, the designer can also appropriately change the pattern of the first counter electrode 370a or the second counter electrode 370b according to the requirements of the product to replace the function of the first transparent electrode 390a or the second transparent electrode 390b, and further simplify the craft.

In this embodiment, the transparent conductive layer 382 is located on the second substrate 220 , and the first sensing spacer 360 a and the second sensing spacer 360 b are disposed on the transparent conductive layer 382 and in contact with the transparent conductive layer 382 . The first light shielding layer 384 a , the second light shielding layer 384 b and the third light shielding layer 384 c are located on the second substrate 220 and correspond to the first sensing spacer 360 a , the second sensing spacer 360 b and the main spacer 250 respectively. A plurality of color filter layers 384 are further disposed on the second substrate 220, and the color filter layers 384 and the light shielding layers 384a, 384b, 384c are alternately arranged. The protective layer 386 is located on the first substrate 210, and the first counter electrode 370a and the second counter electrode 370b are disposed on the protective layer 386, and are connected with the protective layer 386 or the first transparent electrode 390a and the second transparent electrode 390a on the protective layer 386. The transparent electrode 390b is in contact.

As shown in FIG. 3A, the transparent conductive layer 382 can be electrically connected to the first sensing spacer 360a and the second sensing spacer 360b, and is electrically connected to the first opposing electrode 370a and the second opposing electrode 370b respectively when not in operation. sex insulation. When the user touches the central area 312 of the touch-sensitive display panel 300, the touch-sensitive display panel 300 judges the user's touch through the electrical change generated by the first sensing spacer 360a and the first counter electrode 370a. touch position. Similarly, when the user touches the peripheral area 314 of the touch-sensitive display panel 300, the touch-sensitive display panel 300 can judge by the electrical change generated by the second sensing spacer 360b and the second opposite electrode 370b. The user's touch location.

The first sensing spacer 360a, the second sensing spacer 360b, the first counter electrode 370a and the second counter electrode 370b can all be composed of multiple organic conductive layers 260c. Generally speaking, the texture of the organic conductive layer 260c is usually relatively soft, which can reduce the vibration generated when the first sensing spacer 360a is in contact with the first counter electrode 370a (or the second sensing spacer 360b and the second counter electrode 370b). force, thereby reducing the damage probability and damage degree of the transparent conductive layer 382 or other structures. The material of the organic conductive layer 260c can be the materials stated in the first embodiment, but it is not limited to only be composed of these organic conductive materials.

As mentioned above, since the first sensing spacer 360a and the second sensing spacer 360b belong to soft organic conductive material, the first sensing spacer 360a and the second sensing spacer 360a can be formed on the second substrate 220 by inkjet technology. Two sensing spacers 360b. As shown in FIG. 3A , the first sensing spacer 360a may be composed of four organic conductive layers 260c, and the second sensing spacer 360b may be composed of five organic conductive layers 260c. That is to say, the height of the first sensing spacer 360a is 4d, and the height of the second sensing spacer 360b is 5d, and the height 5d of the second sensing spacer 360b is greater than the height 4d of the first sensing spacer 360a.

In practical applications, the organic conductive layer 260c is not limited to four or five layers, and the designer can also properly adjust the dosage and frequency of the organic conductive material ejected by the inkjet process according to the needs of the product, so as to control the organic conductive layer 260c. The number and height of layers 260c. In addition, other manufacturing methods or other inkjet control methods can also be used to manufacture the first sensing spacer 360a and the second sensing spacer 360b, as long as the shapes of the first sensing spacer 360a and the second sensing spacer 360b can be controlled or The height is sufficient, for example, the height of the organic conductive layer 260c formed by each inkjet process may also vary.

In addition, the form of the organic conductive material formed on the second substrate 220 can also be adjusted by using the inkjet process technology. As shown in FIG. 3A , both the first sensing spacer 360 a and the second sensing spacer 360 b have spherical tops. However, the tips of the first sensing spacer 360 a and the second sensing spacer 360 b can also be blunt tips. Wherein, the spherical tip or the blunt tip of the first sensing spacer 360a and the second sensing spacer 360b can make the first sensing spacer 360a and the first opposing electrode 370a (or the second sensing spacer 360b and the second opposing electrode 370a The force generated when the electrodes 370b) are in contact is more gradual.

The first sensing spacer 360a and the second sensing spacer 360b can simultaneously or alternatively exhibit a spherical tip or a blunt tip. That is to say, at least one of the first sensing spacer 360 a and the second sensing spacer 360 b has a spherical tip or a blunt tip. In addition, the designer may use other manufacturing methods to dispose the first sensing spacer 360a and the second sensing spacer 360b on the second substrate 220 according to the needs of the product, and the present invention does not limit the inkjet process technology.

From another perspective, there is a first sensing gap g1 between the first sensing spacer 360a and the first counter electrode 370a, and a second sensing gap g1 between the second sensing spacer 360b and the second counter electrode 370b. The gap g2, and the first sensing gap g1 is correlated with the height of the first sensing spacer 360a, and the second sensing gap g2 is correlated with the height of the second sensing spacer 360b.

In detail, since the main spacer 250 can maintain a gap D between the first substrate 210 and the second substrate 220 , the first sensing gap g1 will become larger as the height of the first sensing spacer 360 a becomes smaller. Conversely, when the height of the first sensing spacer 360a becomes larger, the first sensing gap g1 will become smaller. In practical applications, the gap D may not be equidistant everywhere, therefore, the second sensing gap g2 may also be smaller than the first sensing gap g1.

However, the ability to sense the touch position on the touch-sensitive display panel 300 is not the same. Since the sealant 230 is located in the peripheral region 214, the deformability of the peripheral region 214 is limited by the sealant 230, and is poorer than that of the central region 312. Therefore, the sensing capability of the peripheral region 214 is also lower than that of the central region 312. poor ability. In order to improve the sensing ability of the peripheral area 214, the second sensing spacer 360b can be arranged closer to the second counter electrode 370b, that is, the height 5d of the second sensing spacer 360b is larger or the second sensing gap g2 is smaller The first sensing spacer 360a is disposed farther away from the first counter electrode 370a, that is, the height 4d of the first sensing spacer 360a is smaller or the first sensing gap g1 is larger.

As shown in FIG. 3A , the second sensing spacer 360b may be composed of the organic conductive layer 260c having a height sum of 5d, and the distance between the second sensing spacer 360b and the second counter electrode 370b is the second sensing gap g2. On the other hand, the first sensing spacer 360a may be composed of the organic conductive layer 260c having a height sum of 4d, and the distance between the first sensing spacer 360a and the first counter electrode 370a is a first sensing gap g1.

Since the second counter electrode 370b of the peripheral area 314 is closer to the second sensing spacer 360b, and the first counter electrode 370a of the central area 312 is farther away from the first sensing spacer 360a, therefore, the first sensing gap g1 is larger than the second sensing gap g1. Induction gap g2. In a preferred embodiment, the range of the first sensing gap g1 and the second sensing gap g2 is between 0.3 micrometers (μm) and 0.8 micrometers (μm), at this time the touch display panel 300 can have good touch control Performance.

In a preferred embodiment, the materials of the first sensing spacer 360a, the second sensing spacer 360b, the first counter electrode 370a and the second counter electrode 370b are all composed of multiple organic conductive layers 260c, But the present invention is not limited thereto. That is to say, in this embodiment, the first sensing spacer 360 a , the second sensing spacer 360 b , the first counter electrode 370 a and the second counter electrode 370 b need not be formed through a mask and a photolithography process. In addition, it is easier to adjust the heights of the first sensing spacer 360a, the second sensing spacer 360b, the first opposing electrode 370a, and the second opposing electrode 370b by using the inkjet process technology.

The first sensing spacer 360a and the second sensing spacer 360b can also be fabricated on the first substrate 210, while the first opposing electrode 370a and the second opposing electrode 370b are fabricated on the second substrate 220 and respectively connected to the first substrate 210. The sensing spacers 360a and the second sensing spacers 360b are arranged correspondingly, wherein the first sensing spacers 360a and the second sensing spacers 360b are made of organic conductive materials, as shown in FIG. 3B .

3B is a schematic partial cross-sectional view of a fourth embodiment of the touch display panel of the present invention. It can be seen from FIG. 3B that the first sensing spacer 360a and the second sensing spacer 360b are disposed above the first transparent electrode 390a and the second transparent electrode 390b of the protective layer 286 respectively, and are respectively connected to the first transparent electrode 390a and the second transparent electrode 390a. The transparent electrode 390b is in contact.

In other embodiments, the material of the first sensing spacer 360a and the second sensing spacer 360b can be selected from the organic conductive layer 260c, and the material of the first opposing electrode 370a and the second opposing electrode 370b can also be selected. An organic conductive layer 260c is employed. In short, at least one of the first sensing spacer 360 a and the second sensing spacer 360 b is formed of the organic conductive layer 260 c. Similarly, at least one of the first opposite electrode 370a and the second opposite electrode 370b is formed by the organic conductive layer 260c.

In addition, in this embodiment, the first and second sensing spacers 360 a and 360 b or the first and second counter electrodes 370 a and 370 b may be disposed on the first substrate 210 or the second substrate 220 by using an inkjet process technology. Of course, other methods suitable for forming the first and second sensing spacers 360a and 360b or the first and second counter electrodes 370a and 370b may also be used, and the present invention is not intended to limit the manufacturing method thereof.

From the above, it can be seen that the touch sensing capability of the peripheral area 314 can be improved by using the way that the first sensing gap g1 is larger than the second sensing gap g2 . However, anyone skilled in the technical field of the present invention can configure the first sensing spacer 360a on the first substrate 210 (the first counter electrode 370a is configured on the second substrate 220), and the second sensing spacer 360b is disposed on the second substrate 220 (the second counter electrode 370b is disposed on the first substrate 210), so as to obtain a structure in which the first sensing gap g1 is larger than the second sensing gap g2. Alternatively, the first sensing spacer 360a is disposed on the second substrate 220 (the first counter electrode 370a is disposed on the first substrate 210), and the second sensing spacer 360b is disposed on the first substrate 210 (the second counter electrode 370a is disposed on the first substrate 210). The opposite electrode 370b is disposed on the second substrate 220) to achieve the same effect.

In this embodiment, the problem of low touch sensitivity of the peripheral area 314 is solved. Therefore, the touch display panel 300 adopts a method in which the first sensing gap g1 is larger than the second sensing gap g2 to improve the touch sensitivity of the peripheral area 314. ability. In addition, the first sensing spacer 360a or the second sensing spacer 360b presents a spherical tip or a blunt tip, such as the gap between the first or second sensing spacer 360a or 360b and the first or second counter electrode 370a or 370b. The buffer is used to avoid the situation that the transparent conductive layer 382 or other structures are broken or damaged due to excessive force of touch.

To sum up, the present invention uses organic conductive material to form the sensing spacer to facilitate the adjustment of the sensing spacer, not only to improve the area with poor touch sensitivity, but also to make the touch display panel have a uniform sensing sensitivity . However, different products have different heights of sensing spacers, which can avoid the need to replace different masks when making different products on the production line. In addition, the use of organic conductive materials to form the opposite electrode can make the sensing gap easier to adjust, thereby making the range of adjusting the size of the sensing gap more flexible. Due to the soft texture of the organic conductive material, the probability of damage to the touch display panel can be greatly reduced.

Although the present invention has been disclosed above with embodiments, it is not intended to limit the present invention. Any person skilled in the art to which the present invention belongs can make some modifications and modifications without departing from the spirit and scope of the present invention. And other different implementation modes can be conceived, so the protection scope of the present invention should be determined by the scope defined in the claims.

Claims (20)

1. a touch control display panel is characterized in that, described touch control display panel comprises:

One first substrate, it has a middle section and a neighboring area;

One second substrate is positioned at the subtend of described first substrate;

One fluid sealant is positioned at described neighboring area, so that described first substrate and described second substrate are adhered together;

One liquid crystal layer is between described first substrate and described second substrate;

One main gap thing, described first and described second substrate between;

One first induction separation material, described first and described second substrate between and be positioned at described middle section;

One second induction separation material, described first and described second substrate between and be positioned at described neighboring area;

One first counter electrode, the corresponding described first induction separation material setting, and have one first induction gap between described first induction separation material and described first counter electrode; And

One second counter electrode, the corresponding described second induction separation material setting, and have one second induction gap between the second induction separation material and described second counter electrode, and the described first induction gap is greater than the described second induction gap.

2. touch control display panel as claimed in claim 1 is characterized in that, one of them is made of the multilayer organic conductive layers at least for described first induction separation material and the described second induction separation material.

3. touch control display panel as claimed in claim 2, it is characterized in that, the material of described these organic conductive layers is to be selected from 3, at least a in 4-ethene dioxythiophene/poly-sulfonated phenylethylene, polyaniline, polypyrrole, polythiophene, polyacetylene, polyphenyl, poly-furans, poly-selenophen, poly-different thiophene naphthols, polyphenylene sulfide, polystyrene, poly-thianthrene ethene, poly-naphthalene, poly-anthracene, poly-pyrene, poly-azulene, phthalocyanine, pentacene, half cyanine dye and the polyethylene dioxythiophene.

4. touch control display panel as claimed in claim 1 is characterized in that, one of them is made of the multilayer organic conductive layers at least for described first counter electrode and described second counter electrode.

5. touch control display panel as claimed in claim 4, it is characterized in that, the material of described these organic conductive layers is to be selected from 3, at least a in 4-ethene dioxythiophene/poly-sulfonated phenylethylene, polyaniline, polypyrrole, polythiophene, polyacetylene, polyphenyl, poly-furans, poly-selenophen, poly-different thiophene naphthols, polyphenylene sulfide, polystyrene, poly-thianthrene ethene, poly-naphthalene, poly-anthracene, poly-pyrene, poly-azulene, phthalocyanine, pentacene, half cyanine dye and the polyethylene dioxythiophene.

6. touch control display panel as claimed in claim 1 is characterized in that, the scope in described first induction gap and the described second induction gap is between 0.3 micron and 0.8 micron.

7. touch control display panel as claimed in claim 1 is characterized in that, one of them has spherical top or blunt shape top at least for described first induction separation material and the described second induction separation material.

8. touch control display panel as claimed in claim 1, it is characterized in that, described touch control display panel comprises a transparency conducting layer in addition, and described first induction separation material and the described second induction separation material are to be configured on the described transparency conducting layer, and contact with described transparency conducting layer.

9. touch control display panel as claimed in claim 1 is characterized in that, described touch control display panel comprises that in addition one first light shield layer, one second light shield layer and one the 3rd light shield layer are positioned on described second substrate.

10. touch control display panel as claimed in claim 9 is characterized in that, described first light shield layer, described second light shield layer and described the 3rd light shield layer correspond respectively to the described first induction separation material, described second induction separation material and the setting of main gap thing.

11. touch control display panel as claimed in claim 1; it is characterized in that; described touch control display panel comprises a protective seam and a plurality of transparency electrode in addition; described protective seam is positioned on described first substrate, and described these transparency electrodes are positioned on the described protective seam and corresponding to the described first induction separation material and described second responds to the separation material setting.

12. touch control display panel as claimed in claim 11 is characterized in that, described first counter electrode and described second counter electrode distinctly are configured on described these transparency electrodes.

13. a touch control display panel is characterized in that, described touch control display panel comprises:

One first substrate, it has a middle section and a neighboring area;

One second substrate is positioned at the subtend of described first substrate;

One fluid sealant is positioned at described neighboring area, so that described first substrate and described second substrate are adhered together;

One liquid crystal layer is between described first substrate and described second substrate;

One main gap thing, described first and described second substrate between;

One first induction separation material, described first and described second substrate between and be positioned at described middle section; And

One second induction separation material, described first with described second substrate between and be positioned at described neighboring area, and the described second induction separation material is higher than described first and responds to separation material.

14. touch control display panel as claimed in claim 13, it is characterized in that, the described touch control display panel of described touch control display panel comprises one first counter electrode and one second counter electrode in addition, the corresponding described first induction separation material setting of described first counter electrode, and the corresponding described second induction separation material setting of described second counter electrode.

15. touch control display panel as claimed in claim 13 is characterized in that, one of them is made of the multilayer organic conductive layers at least for described first induction separation material and the described second induction separation material.

16. a touch control display panel is characterized in that, described touch control display panel comprises:

One first substrate;

One second substrate is positioned at the subtend of described first substrate;

One fluid sealant is to be adhered together described first substrate and described second substrate;

One liquid crystal layer is arranged between described first substrate and described second substrate;

One main gap thing, described first and described second substrate between; And

One induction separation material is positioned on described first substrate or described second substrate, and

Described induction separation material is made of the multilayer organic conductive layers.

17. touch control display panel as claimed in claim 16, it is characterized in that, the material of described these organic conductive layers is to be selected from 3, at least a in 4-ethene dioxythiophene/poly-sulfonated phenylethylene, polyaniline, polypyrrole, polythiophene, polyacetylene, polyphenyl, poly-furans, poly-selenophen, poly-different thiophene naphthols, polyphenylene sulfide, polystyrene, poly-thianthrene ethene, poly-naphthalene, poly-anthracene, poly-pyrene, poly-azulene, phthalocyanine, pentacene, half cyanine dye and the polyethylene dioxythiophene.

18. touch control display panel as claimed in claim 16 is characterized in that, described touch control display panel comprises a subtend electrode in addition, is provided with corresponding to described induction separation material.

19. touch control display panel as claimed in claim 18 is characterized in that, described counter electrode is made of the multilayer organic conductive layers.

20. touch control display panel as claimed in claim 19, it is characterized in that, the material of described these organic conductive layers is to be selected from 3, at least a in 4-ethene dioxythiophene/poly-sulfonated phenylethylene, polyaniline, polypyrrole, polythiophene, polyacetylene, polyphenyl, poly-furans, poly-selenophen, poly-different thiophene naphthols, polyphenylene sulfide, polystyrene, poly-thianthrene ethene, poly-naphthalene, poly-anthracene, poly-pyrene, poly-azulene, phthalocyanine, pentacene, half cyanine dye and the polyethylene dioxythiophene.

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