CN114265516A - Touch display panel and display device - Google Patents
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- CN114265516A CN114265516A CN202111553011.9A CN202111553011A CN114265516A CN 114265516 A CN114265516 A CN 114265516A CN 202111553011 A CN202111553011 A CN 202111553011A CN 114265516 A CN114265516 A CN 114265516A
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Abstract
The application provides a touch display panel and a display device, which comprises a touch functional layer, wherein the touch functional layer comprises a plurality of signal routing lines, each signal routing line comprises a first routing line section extending along a first direction and a second routing line section extending along a second direction, the first routing line section and the second routing line section are intersected and are positioned in a display area, two adjacent signal routing lines form a routing line pair, each routing line pair comprises a plurality of sequentially connected routing line units, each routing line unit comprises two oppositely arranged routing line segments, each routing line segment comprises a first connecting section and a second connecting section positioned between the two first connecting sections, a first partition is formed in each routing line unit, and a second partition is formed between the adjacent routing line units; and the reflection compensation layer is positioned between the substrate and the touch control functional layer and comprises a plurality of reflection patterns, and the reflection patterns correspond to the positions of the first partition and/or the second partition.
Description
Technical Field
The application relates to the technical field of display, in particular to a touch display panel and a display device.
Background
Display screens have been widely used in many fields such as portable electronic devices (e.g., mobile communication terminals, tablet computers, electronic books, and navigation devices) and large-screen electronic devices, wherein organic light-Emitting diodes (OLEDs) are increasingly used in display screens due to their advantages of low power consumption, high color saturation, wide viewing angle, thin thickness, and flexibility.
At present, the OLED touch display screen mainly includes a substrate and a touch functional layer disposed on the surface of the display panel, but for the full-screen, the reflection angles of the metal signal traces in the touch functional layer to the external environment light in different areas of the display panel are different, so that the display screen has the phenomenon of uneven display brightness (Mura) in partial areas, and the display effect is affected.
Therefore, the prior art has defects which need to be solved urgently.
Disclosure of Invention
The application provides a touch display panel, can solve the uneven problem of luminance that the signal was walked the line and is caused because the reflection in the different regions of display area.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the utility model provides a touch-control display panel, includes the display area and is located the frame district of display area one side, its characterized in that includes:
a substrate including a light emitting layer including a plurality of pixel units;
the touch control functional layer is arranged on the substrate and comprises a touch control electrode layer and a touch control signal wiring layer, and the touch control electrode layer comprises a plurality of touch control induction blocks positioned in the display area; the touch signal routing layer comprises a plurality of signal routing lines, the signal routing lines are connected with the touch sensing blocks in a one-to-one correspondence manner, a first part of the signal routing lines comprise a first routing section extending along a first direction and a second routing section extending along a second direction, the first routing section is intersected with the second routing section, the first routing section and the second routing section are both positioned in the display area, each signal routing line comprises two first connecting sections and a second connecting section positioned between the two first connecting sections, two adjacent signal routing lines form a routing line pair, each routing line pair comprises a plurality of sequentially connected routing line units, the distance between the two first connecting sections and the distance between the two second connecting sections of each routing line unit are different so as to form a routing line light outlet part for leading the pixel units to emit light between the signal routing lines, a first partition is formed in each wiring unit, and a second partition is formed between every two adjacent wiring units; and
the reflection compensation layer is positioned between the substrate and the touch control functional layer and comprises a plurality of reflection patterns, the reflection patterns correspond to the positions of the first partition and/or the second partition, and the reflection patterns are used for compensating the graphic difference of the routing unit in the first direction and the second direction.
In one embodiment of the present invention, the first trace segment is perpendicular to the second trace segment.
In one embodiment of the invention, a distance between two first connecting segments of the trace unit is smaller than a distance between two second connecting segments, the light emitting portion at least includes a first light emitting space defined between the two second connecting segments included in the trace unit, and patterns of the first light emitting space before and after being rotated by 90 degrees are overlapped.
In one embodiment of the present invention, a pair of protruding pillars is disposed on a side of one of the second connecting sections of each of the pair of traces, the side of the one of the second connecting sections facing away from the other second connecting section, the pair of protruding pillars includes two protruding bumps disposed at an interval, the pair of protruding pillars of the adjacent pair of traces are spaced apart from each other, the pair of protruding pillars can coincide with the two first connecting sections of the pair of traces by rotating 90 degrees, and the first partition is a position where a width between the two second connecting sections of the trace unit is the smallest.
In one embodiment of the present invention, the second partition is a space between two bumps of adjacent trace units.
In one embodiment of the present invention, the reflective patterns include first reflective patterns corresponding to the first partitions, a length of each first reflective pattern is equal to a length of a first space formed between two first connection segments, and a width of each first reflective pattern is equal to a width of the signal trace.
In one embodiment of the present invention, the reflective patterns further include a second reflective pattern corresponding to the second partition, and a length of the second reflective pattern is equal to a difference between heights of the first connection segment and the bump.
In one embodiment of the present invention, the touch sensing blocks form a matrix arrangement with M rows and N columns, where the sizes of the touch sensing blocks in the 1 st row to the M-1 st row are the same, the sizes of the touch sensing blocks in the M th row are the same, and the size of the touch sensing block in the M th row is smaller than the size of the touch sensing blocks in the remaining rows.
In one embodiment of the present invention, the second trace segment is located at a side, close to the frame region, of the touch sensing blocks in the row where the touch sensing blocks conducted with the second trace segment are located, a second portion of the signal traces extends to the frame region in a straight line, and a redundant metal pad is disposed at a side, close to the frame region, of the touch sensing blocks in the row where the touch sensing blocks conducted with the second portion of the signal traces are located, and the redundant metal pad is not conductive.
The invention also relates to a display device.
A display device comprising a display panel as claimed in any one of the above.
The beneficial effect of this application does: the application provides a touch-control display panel sets up the reflection compensation layer between touch-control functional layer and base plate, makes the signal walk the difference between the shape when extending along the first direction and the shape when extending along the second direction of line and compensate through the reflection compensation layer to eliminate the signal and walk the uneven phenomenon of luminance that the line caused because the reflection in the different regions of display area, promoted display effect.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a touch display panel according to a first embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of the touch display panel of FIG. 1;
FIG. 3 is an enlarged view of a region A of the touch display panel of FIG. 1;
FIG. 4 is an enlarged view of a region B of the touch display panel of FIG. 1;
fig. 5 is a schematic structural diagram of signal traces included in a touch display panel according to a second embodiment of the present disclosure.
Description of the reference numerals
100-touch display panel;
1-a substrate; 2-a touch functional layer; 3-a reflection compensation layer; 4-a planarization layer;
101-a display area; 103-a frame area; 105-a binding region; 370-a first branch section;
10-a substrate; 12-a light emitting layer; 14-an encapsulation layer; 120-pixel cells; 372-a second branch section;
20-a touch electrode layer; 22-touch signal routing layer; 201-touch sensing block;
220. 320-signal routing; 222-a first portion of signal traces; 224-a second portion of signal traces;
232-first route segment; 234-second route segment; 32-a second reflective pattern;
110-a fan-out region; 211-redundant metal pads; 30-a first reflective pattern;
240-running line pair; 250-a wiring unit; 252-a trace segment;
260. 360-a first connection section; 262. 362-second connecting segment; 270-a first partition;
272-a second partition; 280-a light emitting part; 282 — a first light exit space; 284-a second light exit space;
290-pairs of studs; 292-bumps.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," and the like are used in the orientation or positional relationship indicated in the drawings, which are based on the orientation or positional relationship shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The present application may repeat reference numerals and/or letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. The touch display panel of the present application is described in detail with reference to specific embodiments.
The present application may repeat reference numerals and/or letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. The touch display panel of the present application is described in detail with reference to specific embodiments.
Referring to fig. 1 to 4, fig. 1 to 4 provide a touch display panel 100, where the touch display panel 100 includes a substrate 1, a touch functional layer 2, a reflection compensation layer 3 located between the substrate 1 and the touch functional layer 2, and a flat layer 4 located on a surface of the touch functional layer 2.
The touch display panel 100 has a display area 101 and a frame area 103 located on one side of the display area 101, and the frame area 103 includes a binding area 105.
The substrate 1 includes a substrate 10, a light emitting layer 12, and an encapsulation layer 14, which are stacked. The light emitting layer 12 includes a plurality of pixel units 120 arranged at intervals, the pixel units 120 are located in the display region 101, and each pixel unit 120 includes at least one sub-pixel.
The touch function layer 2 includes a touch electrode layer 20 and a touch signal wiring layer 22 disposed on the substrate 1. The touch signal wiring layer 22 and the touch electrode layer 20 are disposed on the same layer.
The touch electrode layer 20 includes a plurality of touch sensing blocks 201, and at least a portion of the touch sensing blocks 201 is located in the display area 101. It should be noted that the touch sensing block 201 may be partially located in the display area 101, or may be entirely located in the display area 101. Preferably, the touch sensing block 201 is located entirely within the display area 101. Therefore, touch operation can be performed in the display area 101 of the touch display panel 100, and the range of touch sensing is enlarged.
In this embodiment, the touch sensing blocks 201 form a matrix arrangement with M rows and N columns, wherein the touch sensing blocks 201 in the 1 st row to the M-1 st row have the same size, the touch sensing blocks 201 in the M th row have the same size, and the size of the touch sensing block 201 in the M th row is smaller than that of the touch sensing blocks 201 in the remaining rows. The touch sensing blocks 201 in the bottom row of the display area 101 are reduced in size to leave a space required by the fan-out area 110 in the display area 101.
The touch signal routing layer 22 includes a plurality of signal routing lines 220, the plurality of signal routing lines 220 correspond to the plurality of touch sensing blocks 201 one-to-one and are electrically connected to the plurality of touch sensing blocks 201, and the plurality of signal routing lines 220 extend to the bonding area 105. And is connected to the driver integrated circuit within the bonding region 105. The signal routing 220 connects the touch sensing block 201 and the driving integrated circuit, so as to realize the transmission of the touch signal. The driving integrated circuit may be a touch driving circuit, or may be a combination of the touch driving circuit and a display driving circuit.
A first portion of the signal traces 222 in the plurality of signal traces 220 includes a first trace segment 232 extending along a first direction and a second trace segment 234 extending along a second direction, the first trace segment 232 and the second trace segment 234 intersect, and both the first trace segment 232 and the second trace segment 234 are located in the display area 101. In this embodiment, the second trace segment 234 is located at a side of the touch sensing block 201, which is close to the frame area 103, of the row of the touch sensing blocks 201 conducted with the second trace segment.
The touch functional layer 2 includes a fan-out area 110, and the second line segment 234 is located in the fan-out area 110, it should be noted that the second line segment 234 may be partially located in the fan-out area 110, or may be entirely located in the display area 101. Preferably, the second line segment 234 is located in the fan-out area 110, so as to realize a narrow frame of the touch display panel 100.
Referring to fig. 3, two adjacent signal traces 220 form a trace pair 240, each trace pair 240 includes a plurality of trace units 250 connected in sequence, each trace unit 250 includes two oppositely disposed trace segments 252, and each trace segment 252 includes a first connection segment 260 and a second connection segment 262 located between the two first connection segments 260.
The distance between the two first connecting segments 260 and the distance between the two second connecting segments 262 included in each routing unit 250 are different, so as to form a light-emitting portion 280 for emitting light from the pixel unit 120 between the signal routing 220, a first partition 270 is formed in each routing unit 250, and a second partition 272 is formed between adjacent routing units 250.
In the embodiment, the first line segment 232 is perpendicular to the second line segment 234, so as to save the space required by the fan-out area 110.
In this embodiment, a distance between two first connecting segments 260 of the trace unit 250 is smaller than a distance between two second connecting segments 262, the light emitting portion 280 at least includes a first light emitting space 282 defined between the two second connecting segments 262 included in the trace unit 250, and patterns of the first light emitting space 282 before and after being rotated by 90 degrees are overlapped. It can be understood that, in the present embodiment, the light exit portion 280 further includes a second light exit space 284 defined by every adjacent 4 trace units 250. The shape of the pixel unit 120 can be set according to the shapes of the first light-exiting space 282 and the second light-exiting space 284.
One side of one of the second connecting sections 262 included in each of the running pairs 240, which faces away from the other second connecting section 262, is provided with a pair of protruding columns 290, the pair of protruding columns 290 includes two protruding blocks 292 arranged at intervals, the pair of protruding columns 290 of the adjacent running pair 240 are spaced apart, and the pair of protruding columns 290 can be overlapped with the two first connecting sections 260 included in the running pair 240 by rotating 90 degrees. With this arrangement, the difference in shape between the first running line segment 232 and the second running line segment 234 can be reduced.
The first partition 270 is a position with a minimum width between the two second connecting segments 262 of the routing unit 250. The second partition 272 is a space d between two bumps 292 of adjacent routing units 250.
The reflection compensation layer 3 is located between the substrate 1 and the touch functional layer 2, the reflection compensation layer 3 includes a plurality of reflection patterns, the reflection patterns correspond to the positions of the first partition 270 and/or the second partition 272, and the reflection patterns are used for compensating the pattern difference of the routing unit 250 in the first direction and the second direction. That is, in the present embodiment, the reflection compensation layer 3 is disposed such that the pattern of the area of the dotted line frame C of fig. 3 is closer to the pattern of the area of the dotted line frame D of fig. 4, thereby reducing the reflection difference.
That is, only the first reflective patterns 30 corresponding to the positions of the first partitions 270, only the second reflective patterns 32 corresponding to the positions of the second partitions 272, or both the first reflective patterns 30 and the second reflective patterns 32 corresponding to the first partitions 270 and the second partitions 272 may be provided according to the actual luminance difference.
In this embodiment, specifically, the reflective patterns include a first reflective pattern 30 corresponding to the first partition 270 and a second reflective pattern 32 corresponding to the second partition 272, a length of the first reflective pattern 30 is equal to a length of a first space formed between two first connection segments 260, and a width of the first reflective pattern 30 is equal to a width of the signal trace 220. The length of the second reflective pattern 32 is equal to the difference between the heights of the first connecting segment 260 and the bump 292, and the width of the second reflective pattern 32 is equal to the width of the signal trace 220.
A second part of the signal traces 224 of the plurality of signal traces 220 extends straight to the fan-out region 110 and then to the frame region 103, a redundant metal pad 211 is disposed on one side, close to the frame region 103, of the touch sensing block 201 in the row where the touch sensing block 201 is located, the touch sensing block being electrically connected with the second part of the signal traces 224, and the redundant metal pad 211 is not electrically connected. Since the second trace segment 234 is disposed below the row of the partial touch sensing block 201, and the row of the partial touch sensing block 201 is blank, the two portions have reflection difference, and a redundant metal pad 211 may be disposed to eliminate the reflection difference.
In the present embodiment, the planarization layer 4 is provided on the surface of the touch functional layer 2. The planarization layer 4 may be a film made of an insulating material, for example, an insulating film made of Organic resin (OC).
In summary, in the touch display device and the touch display panel 100 provided in the present application, since the partial signal trace 220 includes the first trace 232 extending along the first direction and the second trace 234 extending along the second direction, the second trace 234 and the first trace 232 have different shapes due to the extending direction, therefore, the reflection angles of the second line segment 234 and the first line segment 232 to the external environment light are different, which may cause uneven brightness, and in order to eliminate the uneven brightness, therefore, the reflection compensation layer 3 is disposed between the substrate 1 and the touch functional layer 2, so that the sum of the area of the trace unit 250 in the first direction and the area of the first reflection pattern 30 is equal to the sum of the area of the trace unit 250 in the second direction and the area of the second reflection pattern 32, thereby reducing or eliminating the uneven brightness caused by the shape difference between the routing units 250 in the first direction and the routing units 250 in the second direction.
Referring to fig. 5, the touch display panel shown in fig. 5 is substantially the same as the touch display panel 100 of the first embodiment, and the difference is that in this embodiment, the shape of the second connecting section 362 included in the signal trace 320 is slightly different from that of the first embodiment, in this embodiment, the second connecting section 362 is formed by sequentially connecting three branch sections, specifically, the second connecting section 362 includes a first branch section 370 and second branch sections 372 located at two ends of the first branch section 370, the length of the first branch section 370 is smaller than that of the second branch section 372, and the shape of the two second connecting sections 362 formed relatively is a rhomboid. That is, the first connection segment 360 is used for connection, and the second connection segment 362 is used for bypassing the pixel unit 120. So that the pixel cells 120 may also be diamond shaped. In this embodiment, the first reflective pattern 30 is also formed at a position corresponding to the first partition 270, and the second reflective pattern 32 is formed at a position corresponding to the second partition 272.
The embodiment of the present application further provides a display device, which includes a touch display panel 100, and the specific structure of the touch display panel 100 refers to the above embodiments, and since the display device adopts all the technical solutions of all the above embodiments, the display device at least has all the beneficial effects brought by the technical solutions of the above embodiments. And will not be described in detail herein.
The display device includes a touch display panel 100, a control circuit, and a housing. The housing is connected to the touch display panel 100 to support and fix the touch display panel 100, the control circuit is disposed in the housing, and the control circuit is electrically connected to the touch display panel 100 to control the touch display panel 100 to display images.
The touch display panel 100 can be fixed to the housing to form an integral body with the housing, and the touch display panel 100 and the housing form a closed space for accommodating the control circuit. The control circuit may be a display device motherboard, and at the same time, one or more of functional components such as a battery, an antenna structure, a microphone, a speaker, an earphone interface, a universal serial bus interface, a camera, a distance sensor, an ambient light sensor, a receiver, and a processor may be integrated with the control circuit, so that the display device can adapt to various application fields.
It should be noted that the display device is not limited to the above, and may further include other devices, such as a camera, an antenna structure, a fingerprint unlocking module, etc., to expand the application range thereof, and is not limited herein.
It should be noted that the display device in the embodiment of the present application has a wide application range, and includes flexible OLED displays and illuminations such as televisions, computers, mobile phones, foldable and rollable OLEDs, and wearable devices such as smart bracelets, smart watches, Virtual Reality (VR), and the like, which are all within the application range of the display device in the embodiment of the present application.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (10)
1. The utility model provides a touch-control display panel, includes the display area and is located the frame district of display area one side, its characterized in that includes:
a substrate including a light emitting layer including a plurality of pixel units;
the touch control functional layer is arranged on the substrate and comprises a touch control electrode layer and a touch control signal wiring layer, and the touch control electrode layer comprises a plurality of touch control induction blocks positioned in the display area; the touch signal routing layer comprises a plurality of signal routing lines, the signal routing lines are connected with the touch sensing blocks in a one-to-one correspondence mode, a first part of the signal routing lines comprise first routing sections extending along a first direction and second routing sections extending along a second direction, the first routing sections and the second routing sections are intersected and are positioned in a display area, two adjacent signal routing lines form routing pairs, each routing pair comprises a plurality of sequentially connected routing units, each routing unit comprises two oppositely arranged routing segments, each routing segment comprises a first connecting section and a second connecting section positioned between the two first connecting sections, the distance between the two first connecting sections and the distance between the two second connecting sections of each routing unit are different, and a light outlet part for leading light out of the pixel units is formed between the routing lines, a first partition is formed in each wiring unit, and a second partition is formed between every two adjacent wiring units; and
the reflection compensation layer is positioned between the substrate and the touch control functional layer and comprises a plurality of reflection patterns, the reflection patterns correspond to the positions of the first partition and/or the second partition, and the reflection patterns are used for compensating the graphic difference of the routing unit in the first direction and the second direction.
2. The touch display panel of claim 1, wherein the first trace segment is perpendicular to the second trace segment.
3. The touch display panel according to claim 1, wherein a distance between two first connecting segments of the trace unit is smaller than a distance between two second connecting segments, the light exit portion at least includes a first light exit space defined between the two second connecting segments included in the trace unit, and patterns of the first light exit space before and after being rotated by 90 degrees are overlapped.
4. The touch display panel according to claim 3, wherein a pair of protruding pillars is disposed on a side of one of the second connecting sections of each of the pair of traces facing away from the other second connecting section, the pair of protruding pillars includes two protruding blocks disposed at an interval, the pair of protruding pillars of the adjacent pair of traces are spaced apart from each other, the pair of protruding pillars can coincide with the two first connecting sections of the pair of traces by rotating 90 degrees, and the first partition is a position where a width between the two second connecting sections of the trace unit is the smallest.
5. The touch display panel according to claim 4, wherein the second partition is a space between two bumps of adjacent trace units.
6. The touch display panel according to claim 3, wherein the reflection patterns include first reflection patterns corresponding to the first partitions, a length of the first reflection patterns is equal to a length of a first space formed between two first connection segments, and a width of the first reflection patterns is equal to a width of the signal traces.
7. The touch display panel according to claim 4, wherein the reflective patterns further include a second reflective pattern corresponding to the second partition, a length of the second reflective pattern is equal to a difference between heights of the first connecting segment and the bump, and a width of the second reflective pattern is equal to a width of the signal trace.
8. The touch display panel according to claim 1, wherein the touch sensing blocks form a matrix arrangement with M rows and N columns, wherein the touch sensing blocks in the 1 st row to the M-1 st row have the same size, the touch sensing blocks in the M th row have the same size, and the touch sensing blocks in the M th row have a size smaller than that of the touch sensing blocks in the remaining rows.
9. The touch display panel according to claim 2, wherein the second trace segment is located at a side of the touch sensing block of the row where the touch sensing block connected with the second trace segment is located, the side being close to the frame area, a second part of the signal traces among the plurality of signal traces extends to the frame area in a straight line, a redundant metal pad is disposed at a side of the touch sensing block of the row where the touch sensing block connected with the second part of the signal traces is located, the side being close to the frame area, and the redundant metal pad is not conductive.
10. A display device, characterized in that the display device comprises the touch display panel according to any one of claims 1 to 9.
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| CN114265516B (en) | 2023-06-27 |
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