CN103294263B - Touch display device and display device - Google Patents

Abstract

The invention provides a touch display device, which comprises a display panel, a touch panel, a second shading pattern with a second opening and an adhesion layer. The display panel has an upper surface, and the upper surface has a display area. The touch panel is disposed on the upper surface of the display panel and includes a transparent substrate and a first light-shielding pattern having a first opening. The surface of the transparent substrate faces the upper surface, and the first light-shielding pattern and the second light-shielding pattern are arranged on the surface of the transparent substrate. The first shading pattern is not overlapped with the display area in the vertical projection direction. The sidewall of the second opening is substantially aligned with the boundary of the display area in the vertical projection direction. The adhesion layer is arranged between the display panel and the touch panel.

Description

Touch display device and display device

【Technical field】

The present invention relates to a touch display device and a display device, in particular to a touch display device and a display device that use a light-shielding pattern to cover areas with uneven color distribution.

【Background technique】

Due to the characteristics of human-computer interaction, the touch panel has been widely used in the external input interface of the instrument. In recent years, as the application of consumer electronic products has become more and more extensive, there are more and more application products that combine a touch panel with a touch function and a display device to form a touch display device, including mobile phones ( mobilephone), satellite navigation system (GPSnavigatorsystem), tablet computer (tabletPC), personal digital assistant (PDA) and notebook computer (laptopPC), etc. Generally speaking, the touch panel is arranged on the display surface of the display device, and the image displayed on the display surface can pass through the touch panel for the user to watch, so that the user can not only watch the image of the display device, but also Directly touch the touch panel corresponding to the image to execute the corresponding function. However, in a traditional touch panel, only a transparent conductive layer and an insulating layer as touch sensing elements need to be formed on the transparent substrate of the touch area, and a metal layer needs to be formed on the transparent substrate of the peripheral area outside the touch area. Wires, transparent conductive layers, insulating layers, and light-shielding layers for shielding metal wires. In this way, the film thickness of the touch area is different from that of the peripheral area, so that the insulating layer in the touch area adjacent to the peripheral area is uneven and has an uneven thickness. Therefore, when the image displayed by the display device penetrates the uneven insulating layer, a phenomenon of uneven color distribution (mura) will occur, resulting in poor image quality. In view of this, solving the problem of poor image quality is the goal of the industry.

【Content of invention】

One of the main objectives of the present invention is to provide a touch display device and a display device to solve the problem of uneven color distribution of displayed images.

To achieve the above purpose, the present invention provides a touch display device, including a display panel, a touch panel, a second light-shielding pattern, and an adhesive layer. The display panel has an upper surface, and the upper surface has a display area for displaying images. The touch panel is disposed on the upper surface of the display panel, and the touch panel includes a transparent substrate and a first light-shielding pattern. The transparent substrate has a first surface and a second surface opposite to each other, and the first surface faces the upper surface. The first light-shielding pattern is disposed on the first surface of the transparent substrate and has a first opening corresponding to the display area, wherein the first light-shielding pattern does not overlap with the display area in the vertical projection direction, and the first opening is larger than the display area. The second light-shielding pattern is arranged on the upper surface of the display panel or on the second surface of the transparent substrate, and has a second opening corresponding to the display area, wherein the side wall of the second opening is on the boundary of the display area in the vertical projection direction Virtually aligned. The adhesive layer is disposed between the display panel and the touch panel for bonding the display panel and the touch panel.

To achieve the above purpose, the present invention provides another touch display device, which includes a display panel, a touch panel and an adhesive layer. The display panel has an upper surface, and the upper surface has a display area for displaying an image. The display panel includes an upper substrate, a lower substrate and a black matrix. The lower substrate is arranged opposite to the upper substrate, and the black matrix is arranged between the upper substrate and the lower substrate. The touch panel is disposed on the upper surface of the display panel, and the touch panel includes a transparent substrate, a light-shielding pattern and a protective layer. The transparent substrate has a first surface and a second surface opposite to each other, and the first surface faces the upper surface. The light-shielding pattern is disposed on the first surface of the transparent substrate and has an opening corresponding to the display area, wherein the light-shielding pattern does not overlap with the display area in the vertical projection direction, and the opening is larger than the display area. The protection layer is covered on the light-shielding pattern and the transparent substrate. The protection layer has an unevenness part disposed on the sidewall of the opening, and the black matrix covers the unevenness part in the vertical projection direction. The adhesive layer is disposed between the display panel and the touch panel for bonding the display panel and the touch panel.

To achieve the above purpose, the present invention provides a display device, including a display panel and a light-shielding pattern. The display panel has an upper surface, and the upper surface has a display area. The light-shielding pattern is disposed on the upper surface of the display panel and has an opening corresponding to the display area, wherein the sidewall of the opening is substantially aligned with the boundary of the display area in the vertical projection direction.

In the touch display device of the present invention, the uneven part of the protective layer is arranged outside the display area, and the second light-shielding pattern is used to shield the uneven part of the protective layer, so the touch display device can effectively avoid unevenness due to image penetration. The phenomenon of uneven color distribution produced by the film layer can solve the problem of poor image quality.

【Description of drawings】

FIG. 1 is a schematic top view and a corresponding cross-sectional schematic view of a touch display device according to a first embodiment of the present invention.

FIG. 2 is a schematic top view of the touch sensing element according to the first embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of a touch display device according to a second embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of a touch display device according to a third embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view of a touch display device according to a fourth embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view of a touch display device according to a fifth embodiment of the present invention.

FIG. 7 is a schematic cross-sectional view of a touch display device according to a sixth embodiment of the present invention.

FIG. 8 is a schematic cross-sectional view of a touch display device according to a seventh embodiment of the present invention.

FIG. 9 is a schematic cross-sectional view of a display device according to an embodiment of the present invention.

【Symbol Description】

touch display device

102, 800 display panels

102a, 802a upper surface

104 touch panel

106 first adhesive layer

108 transparent substrate

108a first surface

108b second surface

110 first shading pattern

110a first opening

112 Touch Sensing Elements

114 protective layer

114a First irregularity

116 second shading pattern

116a second opening

118 first sensing series

120 second sensing series

122 sensing units

124 First Touch Sensing Pad

126 first bridge wire

128 Second Touch Sensing Pad

130 second bridge wire

132 first transparent conductive pattern layer

134 insulating layer

134a fourth opening

134b second irregularity

136 second transparent conductive pattern layer

138 peripheral circuits

202, 404, 806 protective film

204, 406 second adhesive layer

302, 502 explosion-proof film

304, 504 third adhesive layer

402 third shading pattern

402a third opening

602 frame

702 upper substrate

704 lower substrate

706 black matrix

802 display panel

804 shading pattern

804a opening

808 adhesive layer

D display area

G spacing

Area around P

【detailed description】

In order to enable those who are familiar with the technical field of the present invention to further understand the present invention, several preferred embodiments of the present invention are enumerated below, together with the accompanying drawings, to describe in detail the constitutional content and desired achievement of the present invention. effect.

Please refer to Figure 1. 1 is a schematic top view and a corresponding cross-sectional schematic view of a touch display device according to a first embodiment of the present invention, for example, a cross-sectional view along line AA' in the top view. As shown in FIG. 1 , the touch display device 100 of this embodiment includes a display panel 102 , a touch panel 104 , a second light-shielding pattern layer 116 and a first adhesive layer 106 . The display panel 102 has an upper surface 102a, and the upper surface 102a has a display area D and a peripheral area P surrounding the display area D. As shown in FIG. The upper surface 102a of the display area D is used for displaying images, and the upper surface 102a of the peripheral area P displays black or presents decorative patterns, but the invention is not limited thereto. The display panel 102 may include a liquid crystal display panel, an organic electroluminescence display panel, an inorganic electroluminescence display panel, a field emission display panel or a plasma display panel, but the invention is not limited thereto. In addition, the touch panel 104 is disposed on the upper surface 102 a of the display panel 102 , and the first adhesive layer 106 is disposed between the display panel 102 and the touch panel 104 for bonding the display panel 102 and the touch panel 104 . The first adhesive layer 106 of this embodiment can cover the upper surface 102a of the display area D, and can include an adhesive material with high light transmittance, such as hydrous glue (hydrousglue) or optical glue (opticalclearadhesive, OCA), etc., but not This is limited to avoid affecting the image quality displayed by the touch display device 100 . In a variant embodiment of the present invention, the first adhesive layer 106 can also be a word-of-mouth glue that is only coated on the periphery of the touch panel and the display panel, without overlapping with the display area D, and the first adhesive layer can be made of an impermeable Light-adhesive material.

In this embodiment, the touch panel 104 includes a transparent substrate 108 , a first light-shielding pattern 110 , a touch sensing element 112 and a protection layer 114 . The transparent substrate 108 has a first surface 108 a and a second surface 108 b opposite to each other, and the first surface 108 a faces the upper surface 102 a of the display panel 102 . The transparent substrate 108 can be made of a transparent base material, such as glass, plastic or quartz. Moreover, the first light-shielding pattern 110 is disposed on the first surface 108a of the transparent substrate 108, that is, between the transparent substrate 108 and the display panel 102, and the first light-shielding pattern 110 has a first opening 110a, corresponding to the top of the display area D. The surface 102 a is disposed and exposes part of the first surface 108 a of the transparent substrate 108 . The first light-shielding pattern 110 does not overlap with the display area D in the vertical projection direction, that is, in the direction perpendicular to the transparent substrate 108 , and the first opening 110 a is larger than the display area D. That is to say, the first opening 110a of the first light-shielding pattern 110 can not only expose the upper surface 102a of the display area D, so that the image displayed on the display panel 102 can be displayed through the first opening 110a without being shielded by the first light-shielding pattern 110 Moreover, there is a distance G greater than zero between the sidewall of the first opening 110a of the first light-shielding pattern 110 and the boundary of the display area D. The material of the first light-shielding pattern 110 may include organic materials, such as opaque materials such as ink, screen printing, photoresist material or black matrix, or other opaque inorganic insulating materials. Moreover, the touch sensing element 112 is disposed on the first surface 108a of the transparent substrate 108 exposed by the first opening 110a of the first light-shielding pattern 110, and is disposed corresponding to the display area D, that is, the touch sensing element 112 can be located between the transparent substrate 108 and the upper surface 102 a of the display area D, so the touch sensing element 112 can correspond to the image displayed on the display panel 102 , and can be used to sense an object touching a position corresponding to the displayed image. In addition, the protective layer 114 covers the transparent substrate 108 , the first light-shielding pattern 110 and the touch-sensing element 112 to protect the first light-shielding pattern 110 and the touch-sensing element 112 . In other words, the protection layer 114 can be located between the transparent substrate 108 and the display panel 102 . Moreover, the material of the protection layer 114 may include an organic insulating material, such as a photoresist material or an overcoat (OC) material, or an inorganic insulating material, such as silicon nitride (SiNx), silicon oxide (SiOx) or silicon oxynitride (SiOxNy). It is worth mentioning that since the protective layer 114 extends from the first surface 108a of the transparent substrate 108 not provided with the first light-shielding pattern 110 to cover the first light-shielding pattern 110, the protection adjacent to the first light-shielding pattern 110 The layer 114 has a first unevenness portion 114a due to its uneven thickness. Moreover, the first uneven portion 114 a of the protection layer 114 is disposed on the sidewall of the first opening 110 a of the first light-shielding pattern 110 .

In addition, the second light-shielding pattern 116 can be disposed on the upper surface 102 a of the display panel 102 or on the second surface 108 b of the transparent substrate 108 . In this embodiment, the second light-shielding pattern 116 is disposed between the protective layer 114 and the display panel 102 , but it is not limited thereto. For example, the second light-shielding pattern 116 can be formed on the protective layer 114 by spraying, pasting, screen printing or ink coating, etc., and its material can include organic materials, such as: ink, screen printing, photoresist material or Opaque materials such as black matrix or other opaque inorganic insulating materials, but not limited thereto. Moreover, the second light-shielding pattern 116 has a second opening 116a, which is set corresponding to the display area D and is smaller than the first opening 110a of the first light-shielding pattern 110, and the sidewall of the second opening 116a is in the same direction as the display area D in the vertical projection direction. The boundaries are substantially aligned. That is to say, the distance between the sidewall of the second opening 116 a and the boundary of the display area D in the vertical projection direction is substantially zero, but the distance still has an error range. Specifically, the error range of the distance between the sidewall of the second opening 116 a and the boundary of the display region D in the vertical projection direction may be less than or equal to 500 micrometers (μm), but not limited thereto. Accordingly, the size of the second opening 116 a of the second light-shielding pattern 116 may be substantially the same as the size of the display area D. Referring to FIG. It is worth noting that the second light-shielding pattern 116 covers the first uneven portion 114a in the vertical projection direction, so the second light-shielding pattern 116 can be used to prevent the image displayed on the display panel 102 from passing through the first uneven portion of the protective layer 114 114 a , so that the image displayed by the touch display device 100 of this embodiment will not produce the phenomenon of uneven color distribution (mura). For example, the sidewalls of the second opening 116a and the sidewalls of the first opening 110a may have a distance G greater than or equal to the width of the first unevenness portion 114a of the protective layer 114 within the distance G, and the distance G may substantially be Between 100 microns and 10000 microns. Preferably, the distance G between the sidewall of the second opening 116 a and the sidewall of the first opening 110 a is substantially between 500 micrometers and 5000 micrometers.

The touch sensing element of this embodiment will be further described below, but the invention is not limited thereto. Please refer to FIG. 2 and also refer to FIG. 1 . FIG. 1 is a schematic top view of a touch sensing element according to a first embodiment of the present invention. As shown in FIGS. 1 and 2 , the touch sensing element 112 of this embodiment is preferably a capacitive touch sensing element, such as a projected capacitive touch sensing element or a surface capacitive touch sensing element. Taking the projected capacitive touch sensing element as an example, it may include a plurality of first sensing series 118 parallel to each other and a plurality of second sensing series 120 parallel to each other, and the first sensing series 118 and the second sensing series 120 The two sensing series 120 are staggered to form a plurality of sensing units 122 arranged in an array. Moreover, each first sensing series 118 includes a plurality of first touch sensing pads 124 and a plurality of first bridge lines 126 , and each first bridge line 126 connects adjacent first touch sensing pads 124 , The first touch sensing pads 124 of each first sensing series 118 are electrically connected to each other. Each second sensing series 120 includes a plurality of second touch sensing pads 128 and a plurality of second bridge lines 130, and each second bridge line 130 connects adjacent second touch sensing pads 128, so that each The second touch sensing pads 128 of the second sensing series 120 are electrically connected to each other. Specifically, in this embodiment, the second bridging line 130 is formed by the first transparent conductive pattern layer 132 , and the first transparent conductive pattern layer 132 is disposed on the first surface 108 a of the transparent substrate 108 . Moreover, the touch panel 104 further includes an insulating layer 134 disposed on the first transparent conductive pattern layer 132 and has a plurality of fourth openings 134 a exposing the second bridge lines 130 . Wherein, two adjacent fourth openings 134 a correspond to the same second bridging line 130 . The first touch sensing pad 124 , the first bridge line 126 and the second touch sensing pad 128 are composed of a second transparent conductive pattern layer 136 , and the second transparent conductive pattern layer 136 is disposed on the insulating layer 134 . Moreover, each first bridge line 126 is disposed between any two adjacent first touch sensing pads 124 in the same first sensing series 118 , and is used to connect adjacent first touch sensing pads 124 . Pad 124. Each second touch sensing pad 128 extends into two fourth openings 134 a to be electrically connected to two adjacent second bridge lines 130 in the same second sensing series 120 through the fourth openings 134 a. Furthermore, the second touch sensing pad 128 is not connected to the first touch sensing pad 124 and the first bridge line 126 , but is electrically insulated from the first touch sensing pad 124 and the first bridge line 126 . Moreover, the insulating layer 134 is located between each of the first bridge lines 126 and each of the second bridge lines 130 , and can be used to electrically insulate the first sensing series 118 and the second sensing series 120 . The material of the insulating layer 134 may include an organic insulating material, such as a photoresist material, or an inorganic insulating material. In a variant embodiment of the present invention, the first touch-sensing pad, the first bridge line and the second touch-sensing pad may be formed of different transparent conductive layers. Alternatively, the first touch-sensing pad and the second touch-sensing pad are made of the same transparent conductive layer, and the first bridge line is made of a different transparent conductive layer from the first touch-sensing pad and the second touch-sensing pad. composed of conductive layers.

In addition, the touch panel 104 may further include a peripheral circuit 138 disposed on the second transparent conductive pattern layer 136 extending to the first light-shielding pattern 110 for connecting the first sensing series 118 and the second sensing series 118 to each other. The test series 120 is electrically connected to the control circuit, the control chip or the outside world. Moreover, in order to reduce the impedance of each first sensing series 118 and each second sensing series 120 electrically connected to the control circuit, the peripheral circuit 138 may be composed of a metal pattern layer, but the present invention is not limited thereto. In this embodiment, the peripheral circuit 138 is disposed between the first light-shielding pattern 110 and the second light-shielding pattern 116, so that the first light-shielding pattern 110 can shield the peripheral circuit 138 in the vertical projection direction, so the peripheral circuit made of metal The circuit 138 will not be seen by the user, and will not affect the appearance of the touch display device 100 . Since the insulating layer 134, the second transparent conductive pattern layer 136 and the peripheral circuit 138 are additionally provided between the protective layer 114 and the first light-shielding pattern 110 in this embodiment, and the insulating layer 134 and the second transparent conductive pattern layer 136 will also be separated from the The first surface 108a of the transparent substrate 108 not provided with the first light-shielding pattern 110 extends to cover the first light-shielding pattern 110. Therefore, in addition to the protective layer 114 having the first unevenness portion 114a, the insulating layer 134 also has the first unevenness portion 114a. Two uneven parts 134b. In this way, the uneven film layer adjacent to the sidewall of the first opening 110 a of the first light-shielding pattern 110 can be formed by the insulating layer 134 , the second transparent conductive pattern layer 136 and the protection layer 114 . It is worth mentioning that the second light-shielding pattern 116 in this embodiment extends to cover the first unevenness portion 114a, so it can simultaneously shield the second unevenness portion 134b of the insulating layer 134 and the unevenness of the second transparent conductive pattern layer. 136. Thereby, the touch display device 100 of this embodiment can effectively avoid the phenomenon of uneven color distribution caused by the image penetrating the uneven insulating layer 134 , thereby solving the problem of poor image quality.

The touch display device of the present invention is not limited to the above-mentioned embodiments. The following will continue to disclose other embodiments or variants of the present invention. However, in order to simplify the description and highlight the differences between the embodiments or variants, the same reference numerals are used to mark the same components, and the repetitive parts will not be repeated.

Please refer to Figure 3. FIG. 3 is a schematic cross-sectional view of a touch display device according to a second embodiment of the present invention. As shown in FIG. 3 , compared with the first embodiment, the second light-shielding pattern 116 of this embodiment is not disposed between the protective layer 114 and the display panel 102 , but is disposed on the second surface 108b of the transparent substrate 108 . Moreover, the touch display device 200 of this embodiment further includes a protective film 202 and a second adhesive layer 204 disposed on the second surface 108 b of the transparent substrate 108 , and the second adhesive layer 204 is disposed on the second surface of the transparent substrate 108 108 b and the protective film 202 are used for bonding the transparent substrate 108 and the protective film 202 . The second adhesive layer 204 of this embodiment can cover the upper surface 102a of the display area D, and can include an adhesive material with high light transmittance, such as water glue or optical glue, etc., but not limited thereto, so as to avoid affecting touch. control the image quality displayed by the display device 200. Moreover, the second light-shielding pattern 116 of this embodiment is disposed on a surface of the protection film 202 . For example, the second light-shielding pattern 116 of this embodiment can be formed on the protective film 202 by spraying, pasting, screen printing or ink coating. The material of the second light-shielding pattern 116 can be, for example, ink, screen printing material or other opaque insulating materials, and the material of the protective film 202 can be, for example, a polymer material, but is not limited thereto. The second light-shielding pattern 116 can be used as a decoration pattern, but is not limited thereto. Then, the protective film 202 formed with the second light-shielding pattern 116 is bonded to the transparent substrate 108 through the second adhesive layer 204, so that the second light-shielding pattern 116 is located between the protective film 202 and the transparent substrate 108, but the present invention is not limited thereto . In a variant embodiment of the present invention, the second light-shielding pattern can be disposed outside the protective film, that is, the protective film is disposed between the second light-shielding pattern and the transparent substrate. In addition, the protective film in this embodiment can be an explosion-proof film to prevent the transparent substrate from bursting due to external force, but the invention is not limited thereto.

Please refer to Figure 4. FIG. 4 is a schematic cross-sectional view of a touch display device according to a third embodiment of the present invention. As shown in FIG. 4 , compared with the second embodiment, the touch display device 300 of this embodiment further includes an explosion-proof film 302 and a third adhesive layer 304 , wherein the explosion-proof film 302 is disposed on the first adhesive layer 106 and the transparent substrate 108 between, and the third adhesive layer 304 is disposed between the explosion-proof film 302 and the transparent substrate 108 . For example, the explosion-proof film 302 can be disposed between the first adhesive layer 106 and the protective layer 114 , and the third adhesive layer 304 is disposed between the explosion-proof film 302 and the protective layer 114 for bonding the explosion-proof film 302 and the protective layer 114 . The third adhesive layer 304 of this embodiment can cover the upper surface 102a of the display area D, and can include an adhesive material with high light transmittance, such as water glue or optical glue, etc., but not limited thereto, so as to avoid affecting touch. control the image quality displayed by the display device 300. Moreover, the first adhesive layer 106 of this embodiment includes a word-of-mouth glue. For example, the first adhesive layer 106 is only coated on the peripheries of the touch panel 104 and the display panel 102 without overlapping with the display area D, and the first adhesive layer 106 may be made of an opaque adhesive material. In a variant embodiment of the present invention, the touch panel may also only further include the explosion-proof film and the third adhesive layer, and the first adhesive layer covers the upper surface of the display area. Alternatively, the touch panel does not include the anti-explosion film and the third adhesive layer, and the first adhesive layer includes glue that is only coated on the periphery of the touch panel and the display panel.

Please refer to Figure 5. FIG. 5 is a schematic cross-sectional view of a touch display device according to a fourth embodiment of the present invention. As shown in FIG. 5 , compared with the first embodiment, the touch display device 400 of this embodiment further includes a third light-shielding pattern 402 , a protective film 404 and a second adhesive layer 406 disposed on the second surface of the transparent substrate 108 on 108b. In this embodiment, the second adhesive layer 406 is disposed between the second surface 108 b of the transparent substrate 108 and the protective film 404 for bonding the transparent substrate 108 and the protective film 404 . Moreover, the second adhesive layer 406 can cover the upper surface 102a of the display area D, and can include an adhesive material with high light transmittance, such as water glue or optical glue, but not limited thereto, so as to avoid affecting the touch display The image quality displayed by the device 400 . The third light-shielding pattern 402 can be disposed on a surface of the protection film 404 . The third light-shielding pattern 402 has a third opening 402a disposed corresponding to the display area D, and the sidewall of the third opening 402a is substantially aligned with the boundary of the display area D in the vertical projection direction. For example, the third light-shielding pattern 402 of this embodiment can be formed on the protective film 404 by spraying, pasting, screen printing or ink coating, etc., and its material can be, for example: ink, screen printing material or other different materials. Light-transmitting insulating materials, but not limited thereto. Then, the protective film 404 is bonded to the transparent substrate 108 through the second adhesive layer 406 . Moreover, the third light-shielding pattern 402 is disposed between the protective film 404 and the transparent substrate 108 , but the invention is not limited thereto. In a variant embodiment of the present invention, the third light-shielding pattern can be disposed outside the protective film, that is, the protective film is disposed between the third light-shielding pattern and the transparent substrate. Also, the protective film may be an explosion-proof film, but the present invention is not limited thereto.

Please refer to Figure 6. FIG. 6 is a schematic cross-sectional view of a touch display device according to a fifth embodiment of the present invention. As shown in FIG. 6 , compared with the first embodiment, the touch display device 500 of this embodiment further includes an explosion-proof film 502 and a third adhesive layer 504 , wherein the explosion-proof film 502 is disposed on the first adhesive layer 106 and the transparent substrate 108 between, and the third adhesive layer 504 is disposed between the explosion-proof film 502 and the transparent substrate 108 . For example, the explosion-proof film 502 can be disposed between the first adhesive layer 106 and the second light-shielding pattern 116, and the third adhesive layer 504 is disposed between the explosion-proof film 502 and the protective layer 114, so as to bond the explosion-proof film 502 and the protective layer. Layer 114. The third adhesive layer 504 of this embodiment can cover the upper surface 102a of the display area D, and can include an adhesive material with high light transmittance, such as water glue or optical glue, but not limited thereto, so as to avoid affecting touch. control the image quality displayed by the display device 500. Moreover, the first adhesive layer 106 of this embodiment includes a word-of-mouth glue. For example, the first adhesive layer 106 is only coated on the peripheries of the touch panel 104 and the display panel 102 without overlapping with the display area D, and the first adhesive layer 106 may be made of an opaque adhesive material. In a variant embodiment of the present invention, the touch panel may also only further include the explosion-proof film and the third adhesive layer, and the first adhesive layer covers the upper surface of the display area. Alternatively, the touch panel does not include the anti-explosion film and the third adhesive layer, and the first adhesive layer includes glue that is only coated on the periphery of the touch panel and the display panel.

Please refer to Figure 7. FIG. 7 is a schematic cross-sectional view of a touch display device according to a sixth embodiment of the present invention. As shown in FIG. 7 , compared with the first embodiment, the touch display device 600 of this embodiment further includes a frame 602 extending from the upper surface 102a of the display panel 102 in the peripheral area P to the display panel 102 in the peripheral area P. The lower surface is used to clamp the display panel 102. It should be noted that the second light-shielding pattern 116 in this embodiment is a part of the frame 602 disposed on the upper surface 102a of the display panel 102, so the second light-shielding pattern 116 is not disposed on the protection layer 114 and the first adhesive layer 106 Instead, it is disposed between the first adhesive layer 106 and the display panel 102 . For example, the frame 602 of this embodiment is made of black material, but not limited thereto. Compared with the first embodiment, the touch display device 600 of this embodiment can omit the fabrication of the second light-shielding pattern, and can simultaneously shield the first unevenness portion 114a of the protective layer 114 and the first unevenness portion 114a of the insulating layer 134 through the frame 602 . The two uneven portions 134b and the uneven second transparent conductive pattern layer 136 are used to avoid uneven color distribution. In a variant embodiment of the present invention, the second light-shielding pattern can also be formed on the display panel by spraying, pasting, screen printing or ink coating, and its material can be, for example, ink, screen printing material or other non-identical materials. Light-transmitting insulating materials, but not limited thereto.

Please refer to Figure 8. FIG. 8 is a schematic cross-sectional view of a touch display device according to a seventh embodiment of the present invention. As shown in FIG. 8 , compared with the first embodiment, the second light shielding pattern of the touch display device 700 of this embodiment is the black matrix of the display panel 102 . In other words, the display panel 102 of this embodiment includes an upper substrate 702, a lower substrate 704 and a black matrix 706, wherein the upper substrate 702 and the lower substrate 704 are disposed opposite to each other, and the black matrix 706 is disposed between the upper substrate 702 and the lower substrate 704 . For example, the black matrix 706 is disposed on the surface of the upper substrate 702 facing the lower substrate 704 , but it is not limited thereto. Moreover, the black matrix 706 covers the first uneven portion 114 a of the protective layer 114 and the second uneven portion 114 b of the insulating layer 134 in the vertical projection direction. Preferably, the black matrix 706 can overlap with the first light-shielding pattern 110 in the vertical projection direction, so as to effectively shield peripheral components of the display panel 102 . Compared with the first embodiment, the touch display device 700 of this embodiment can omit the fabrication of the second light-shielding pattern, and can simultaneously shield the first unevenness portion 114a of the protective layer 114 and the insulating layer 134 through the black matrix 706 . The second uneven portion 134b and the uneven second transparent conductive pattern layer 136 are used to avoid uneven color distribution.

The invention further provides a display device. Please refer to FIG. 9 , which is a schematic cross-sectional view of a display device according to an embodiment of the present invention. As shown in FIG. 9 , the display device 800 of this embodiment includes a display panel 802 and a light-shielding pattern 804 . The display panel 802 has an upper surface 802a, and the upper surface 802a has a display area D for displaying images. The light-shielding pattern 804 is disposed on the upper surface 802 a of the display panel 802 and has an opening 804 a corresponding to the display area D. As shown in FIG. Moreover, the sidewall of the opening 804a is substantially aligned with the boundary of the display area D in the vertical projection direction. That is to say, the distance between the sidewall of the opening 804a and the boundary of the display area D in the vertical projection direction is substantially zero, but the distance still has a margin of error. Specifically, the distance between the sidewall of the opening 804a and the boundary of the display area D in the vertical projection direction may be, for example, less than or equal to 500 microns, but not limited thereto. Thereby, the size of the opening 804 a of the light-shielding pattern 804 can be approximately the same as the size of the display area D. Referring to FIG. In this embodiment, the display device 800 further includes a protective film 806 and an adhesive layer 808 disposed on the upper surface 802 a of the display panel 802 . The light-shielding pattern 804 is disposed on a surface of the protective film 806 , and the adhesive layer 808 is disposed between the upper surface 802 a of the display panel 802 and the protective film 806 . That is to say, the light-shielding pattern 804 is formed on the protective film 806 , and the protective film 806 formed with the light-shielding pattern 804 is bonded to the upper surface 802 a of the display panel 802 through the adhesive layer 808 . In a variant embodiment of the present invention, the light-shielding pattern can also be directly formed on the upper surface of the display panel by spraying, pasting, screen printing, ink or photoresist coating.

To sum up, the touch display device of the present invention arranges the first uneven portion of the protective layer outside the display area, and uses the second light-shielding pattern to shield the first uneven portion of the protective layer, so the touch display device It can effectively avoid the phenomenon of uneven color distribution caused by the image penetrating the uneven insulating layer and protective layer, thereby solving the problem of poor image quality.

Claims (18)

1. A touch display device, comprising: A display panel has an upper surface, and the upper surface has a display area for displaying an image; A touch panel is arranged on the upper surface of the display panel, and the touch panel includes: A transparent substrate has a first surface and a second surface opposite to each other, and the first surface faces the upper surface; a first light-shielding pattern disposed on the first surface of the transparent substrate and having a first opening corresponding to the display area, wherein the first light-shielding pattern does not overlap with the display area in a vertical projection direction , and the first opening is larger than the display area; and a protection layer covering the first light-shielding pattern and the transparent substrate, and the protection layer has an uneven part disposed on the side wall of the first opening; A second light-shielding pattern is arranged between the display panel and the touch panel or on the second surface of the transparent substrate, and has a second opening corresponding to the display area, wherein the side wall of the second opening is on the The vertical projection direction is substantially aligned with the boundary of the display area, and the second light-shielding pattern covers the uneven portion in the vertical projection direction; and A first adhesive layer is arranged between the display panel and the touch panel for bonding the display panel and the touch panel. 2. The touch display device according to claim 1, wherein the touch panel further comprises: A touch sensing element is arranged on the first surface of the transparent substrate and corresponding to the display area, wherein the protective layer covers the touch sensing element. 3. The touch display device according to claim 2, wherein the touch sensing element comprises a plurality of first sensing series and a plurality of second sensing series, and the first sensing series The columns are interlaced with the second sensing series to form a plurality of sensing units arranged in an array. 4. The touch display device according to claim 3, wherein each of the first sensing series comprises a plurality of first touch sensing pads and a plurality of first bridge lines, and the first bridge lines connecting the adjacent first touch sensing pads, each of the second sensing series includes a plurality of second touch sensing pads and a plurality of second bridge lines, and the second bridge lines connect adjacent the second touch sensing pads. 5. The touch display device according to claim 4, wherein the touch panel further comprises an insulating layer disposed between each of the first bridge lines and each of the second bridge lines for electrical Insulate the first sensing series from the second sensing series. 6 . The touch display device according to claim 1 , wherein a distance between the sidewall of the second opening and the sidewall of the first opening is substantially between 100 micrometers and 10000 micrometers. 7. The touch display device according to claim 6, wherein the pitch is substantially between 500 microns and 5000 microns. 8. The touch display device according to claim 1, wherein the touch panel further comprises a peripheral circuit disposed on the first light-shielding pattern, and the first light-shielding pattern is shielded in the vertical projection direction the peripheral circuit. 9. The touch display device according to claim 8, wherein the peripheral circuit is formed by a metal pattern layer. 10. The touch display device according to claim 1, wherein the first adhesive layer comprises optical glue (OCA) or water glue, and the first adhesive layer covers the display area. 11. The touch display device according to claim 1, wherein the first adhesive layer comprises glue, and the first adhesive layer does not overlap with the display area. 12. The touch display device according to claim 1, further comprising a protective film and a second adhesive layer disposed on the second surface of the transparent substrate, and the second adhesive layer is disposed on Between the second surface of the transparent substrate and the protective film, wherein the second light-shielding pattern is disposed on a surface of the protective film. 13. The touch display device according to claim 12, wherein the protective film is an explosion-proof film. 14. The touch display device according to claim 1, wherein the second light-shielding pattern is disposed between the first adhesive layer and the first light-shielding pattern, and the touch display device further comprises a third The light-shielding pattern is arranged on the second surface of the transparent substrate and has a third opening corresponding to the display area, wherein the side wall of the third opening is substantially substantially the same as the boundary of the display area in the vertical projection direction align. 15. The touch display device according to claim 1, further comprising an explosion-proof film disposed between the first adhesive layer and the transparent substrate. 16. The touch display device according to claim 15, further comprising a third adhesive layer disposed between the explosion-proof film and the transparent substrate. 17. The touch display device according to claim 1, wherein the second light-shielding pattern is disposed between the first adhesive layer and the display panel. 18. A touch display device, comprising: A display panel has an upper surface, and the upper surface has a display area for displaying an image, and the display panel includes: One upper substrate; a lower base plate disposed opposite to the upper base plate; and a black matrix, arranged between the upper substrate and the lower substrate; A touch panel is arranged on the upper surface of the display panel, and the touch panel includes: A transparent substrate has a first surface and a second surface opposite to each other, and the first surface faces the upper surface; A light-shielding pattern is arranged on the first surface of the transparent substrate and has an opening corresponding to the display area, wherein the light-shielding pattern does not overlap with the display area in a vertical projection direction, and the opening is larger than the display area Display area; A protection layer covering the light-shielding pattern and the transparent substrate, the protection layer has a first uneven part, which is arranged on the side wall of the opening, and the black matrix covers the first uneven part in the vertical projection direction smoothing; and A transparent conductive pattern layer, arranged between the light-shielding pattern and the protective layer, and extending from the display area to the light-shielding pattern, and the transparent conductive pattern layer has a second unevenness, located on the side of the light-shielding pattern On the wall, wherein the black matrix shields the second unevenness in the vertical projection direction; and An adhesive layer is arranged between the display panel and the touch panel for bonding the display panel and the touch panel.