CN111158535A - Wiring structure of touch panel - Google Patents
Wiring structure of touch panel Download PDFInfo
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- CN111158535A CN111158535A CN201911371602.7A CN201911371602A CN111158535A CN 111158535 A CN111158535 A CN 111158535A CN 201911371602 A CN201911371602 A CN 201911371602A CN 111158535 A CN111158535 A CN 111158535A
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
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- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention provides a touch panel, which comprises a substrate, a pattern layer, an insulating layer, a bridge line layer and a protective layer, and further comprises a plurality of groups of first channels and a plurality of groups of second channels which construct a two-dimensional touch sensing side. The first channels are the same in routing length, the second channels are the same in routing length, so that the total resistance values of the first channels and the routing channels are the same, and the total resistance values of the second channels and the routing channels are the same. According to the invention, the signal uniformity of the channels is improved by limiting the lengths of the multiple routing lines, so that the problems of uneven signal transmission, insufficient sensitivity or uneven energy consumption of the multiple channels of the touch panel in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of touch panels, in particular to a wiring structure of a touch panel.
Background
With the increasing progress of science and technology, electronic products such as smart phones, tablet computers, wearable devices and the like are gradually popularized, and touch panels are required for the devices, so that the requirements of the touch panel technology are higher and higher. The touch panel is mainly divided into: optical, resistive, piezoelectric, capacitive, etc., and most of the current consumer electronics products in the market use capacitive touch panels.
Please refer to fig. 1, which is a schematic diagram of a touch panel in the prior art, the schematic diagram is one of the technologies of the capacitive touch panel in the mainstream at present: the projected capacitive touch panel senses a touch position by using a plurality of groups of channels of two dimensions on a plane. The touch panel shown in fig. 1 includes a plurality of traces 420, a plurality of bonding pads 440, a plurality of first electrodes 211 arranged along a first direction, and a plurality of second electrodes 221 arranged along a second direction, where the first direction is perpendicular to the second direction. Here, the plurality of first electrodes 211 and the plurality of second electrodes 221 are exemplarily represented by a block-shaped electrode pattern.
The plurality of first electrodes 211 are connected in series to form a plurality of first channels 210, and the plurality of second electrodes 221 are connected in series to form a plurality of second channels 220. One end of each of the first vias 210 and the second vias 220 is electrically connected to the bonding pad 440 via each of the traces 420.
Two-dimensional touch sensing of the touch panel is constructed on the plane through the plurality of sets of first channels 210 and the plurality of sets of second channels 220. However, the distance between each of the first vias 210 or the second vias 220 and the bonding pad 440 is different, which affects the length of each of the traces 420, and the traces 420 with different lengths have different resistance values.
For example, the total resistance value of the mth group of first channels Xm and its trace 421-m, which are farthest from the bonding pad 440, is more than 2000 ohms different from the total resistance value of the 1 st group of first channels X1 and its trace 421-1, which are closest to the bonding pad 440. These differences affect the signal transmission uniformity of each of the first channels 210 and each of the second channels 220.
Therefore, the lengths of the traces 420 are different, so that the total resistance of each of the first channels 210 or each of the second channels 220 and each of the traces 420 is different. Since the resistance difference will affect the signal transmission speed of each of the first channels 210 and each of the second channels 220, the signals of the plurality of sets of first channels 210 and the plurality of sets of second channels 220 are not uniformly transmitted, have insufficient sensitivity, or have non-uniform power consumption.
Disclosure of Invention
To solve the above problems, the present invention provides a touch panel, comprising: the touch control device comprises a substrate, a touch control layer, a protective layer, a plurality of groups of first channels and a plurality of groups of second channels. The touch layer is arranged on the substrate and comprises a pattern layer, an insulating layer and a bridge line layer which are sequentially laminated, the pattern layer comprises a plurality of first electrodes arranged along a first direction and a plurality of second electrodes arranged along a second direction, and the bridge line layer comprises a plurality of bridge lines, a plurality of routing lines and a binding pad. The protective layer is arranged on the touch layer. Each first channel is formed by electrically connecting the first electrodes in the same row with the bridge wires parallel to the first direction in series, and each second channel is formed by electrically connecting the second electrodes in the same row with the bridge wires parallel to the second direction in series. Wherein the first direction and the second direction are perpendicular to each other; the binding pads are arranged on one side edge close to the end points of the plurality of groups of second channels; and one end of each first channel is electrically connected with the binding pad through each wire, the length of each wire of each first channel is the same, one end of each second channel is electrically connected with the binding pad through each wire, and the length of each wire of each second channel is the same.
In an embodiment of the invention, the starting points of each of the traces of the odd-numbered rows of the first channels are all the same side, and the starting points of each of the traces of the even-numbered rows of the first channels are all opposite sides of the starting points of each of the traces of the odd-numbered rows of the first channels.
Furthermore, each of the traces of each of the first channels is divided into a first line segment, a second line segment, and a third line segment. The sum of the length of the first line segment, the length of the second line segment, and the length of the third line segment of each first channel is equal to the length of the trace of the first channel farthest from the bonding pad.
And outside the routing of the first channel farthest from the binding pad, the second line segment of each first channel is in a U shape with an opening direction facing the binding pad and parallel to the second direction.
And arranging the U-shapes of the second line segments of the other first channel at a preset interval in the U-shaped opening area of the second line segment of each first channel.
In another embodiment of the present invention, the starting point of each trace of each second channel is close to one side of the bonding pad.
Furthermore, a midline on the bonding pad parallel to the second direction divides the plurality of second channels into two sides. Each of the traces of each of the second channels is divided into a fourth line segment, a fifth line segment and a sixth line segment. The sum of the length of the fourth line segment, the length of the fifth line segment, and the length of the sixth line segment of each second channel is equal to the length of the trace of the second channel farthest from the bonding pad.
And outside the routing wires of the second channels farthest from the binding pads, the fifth line segment of each second channel is in a U shape with an opening direction facing the binding pads and parallel to the first direction.
And arranging the U-shapes of the fifth line segments of the other second channel at a preset interval in the U-shaped opening area of the fifth line segment of each second channel.
One predetermined pitch according to the present invention is about 30 μm.
The invention provides a touch panel, which is designed aiming at a plurality of wires of a plurality of channels in the touch panel, and reduces the total resistance value difference of the plurality of channels and the plurality of wires by limiting the length of the plurality of wires, so as to improve the signal uniformity of the plurality of channels, and solve the problems of uneven signal transmission, insufficient sensitivity or uneven energy consumption and the like of the plurality of channels of the touch panel in the prior art.
For a better understanding of the detailed description and the embodiments of the present invention, reference should be made to the following drawings which are provided for purposes of illustration and description and are not intended to limit the invention.
Drawings
Fig. 1 is a schematic diagram of a touch panel in the prior art.
Fig. 2 is a schematic view of a stacked structure of a touch panel according to the present invention.
Fig. 3 is a schematic diagram of a touch panel according to the present invention.
Fig. 4 is a detailed view of region a of fig. 3.
Fig. 5 is a detailed view of region B of fig. 3.
Detailed Description
The features and spirit of the present invention will be more clearly described in the following detailed description of the embodiments, which is not intended to limit the scope of the present invention by the embodiments disclosed. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the scope of the claims appended hereto.
Referring to fig. 2, fig. 2 is a schematic view of a stacked structure of a touch panel according to the present invention, which includes a substrate 100, a pattern layer 200, an insulating layer 300, a bridge line layer 400, and a passivation layer 500. Since the pattern layer 200, the insulating layer 300, and the bridge line layer 400 belong to a portion of the touch layer, the touch panel of the present invention can be formed by sequentially stacking the substrate 100, the pattern layer 200, the insulating layer 300, the bridge line layer 400, and the passivation layer 500; or the substrate 100, the bridge line layer 400, the insulating layer 300, the pattern layer 200, and the passivation layer 500 are sequentially stacked.
The substrate 100 is made of glass, a film or a display screen.
The material of the pattern layer 200 and the bridge wire layer 400 is Indium Tin Oxide (ITO) or other electrical oxide, aluminum (Al), molybdenum (Mo), copper (Cu), silver (Ag), niobium (Nb), or an alloy thereof.
The insulating layer 300 is made of an inorganic material such as silicon nitride (SiNx) or an organic insulating material.
The material of the protection layer 500 is an inorganic material or an organic material.
Referring to fig. 3, fig. 3 is a schematic diagram of a touch panel design according to the present invention, a plurality of bridge lines (411, 412), a plurality of traces 420, and bonding pads 440 are disposed on the bridge line layer 400 in fig. 2, and a plurality of first electrodes 211 and a plurality of second electrodes 221 are disposed on the pattern layer 200 in fig. 2, which is a square block shaped electrode pattern in this embodiment. The bridge lines 410, the routing lines 420, and the bonding pads 440 are formed by photolithography and etching processes, and each of the routing lines 420 does not overlap with each other.
The plurality of first electrodes 211 are arranged along a first direction, and the plurality of second electrodes 221 are arranged along a second direction, wherein the first direction and the second direction are perpendicular to each other.
The touch panel further includes a plurality of first channels 210 and a plurality of second channels 220, each of the first channels 210 is formed by electrically connecting the plurality of first electrodes 211 in the same row and the plurality of bridge lines 411 parallel to the first direction in series, and each of the plurality of first channels X1, X2 … … Xm-1, Xm is formed on the touch panel; each of the second channels 220 is formed by electrically connecting the second electrodes 221 in the same row with the bridge lines 412 in parallel to the second direction in series, and each set of the second channels Y1, Y2 … … Yn-1, Yn is formed on the touch panel.
The bonding pad 440 is disposed at a side near the end points of the plurality of sets of second channels 220.
One end of each of the first channels 210 is electrically connected to the bonding pad 440 through each of the traces 420, one end of each of the second channels 220 is electrically connected to the bonding pad 440 through each of the traces 420, and two-dimensional touch sensing is implemented on the touch panel through the plurality of sets of first channels 210 and the plurality of sets of second channels 220.
The theoretical calculation of the total resistance R of each of the first channels 210 or each of the second channels 220 and each of the traces 420 is as follows: r × L/W, Rs is a resistance value of each of the first electrodes 211 or each of the second electrodes 221, L is a length of each of the traces 420, and W is a width of each of the traces 420. Since the resistance of each of the first electrodes 211 or the second electrodes 221 is fixed, each Rs has a fixed value; the width of each trace 420 is also fixed, and each W is a constant value; in order to reduce the resistance difference of the channels and improve the signal uniformity of the channels, the invention makes each of the traces 420 of each of the first channels 210 have the same length, and makes each of the traces 420 of each of the second channels 220 have the same length, i.e. each L has a constant value. Thus, the total resistance of each of the first channels 210 and each of the traces 420 is maintained to be the same, and the total resistance of each of the second channels 220 and each of the traces 420 is maintained to be the same, so that the signal transmission speed of each of the first channels 210 is the same, and the signal transmission speed of each of the second channels 220 is the same, thereby solving the problems of non-uniform signal transmission, insufficient sensitivity, non-uniform energy consumption … …, and the like of each channel of the touch panel in the prior art.
In the present invention, the starting points 422a of each of the traces 420 of the odd-numbered rows of the first channels (X1, X3 … … Xm-3, Xm-1) are all on the same side, and the starting points 422b of each of the traces 420 of the even-numbered rows of the first channels (X2, X4 … … Xm-2, Xm) are all on opposite sides of the starting points 422a of each of the traces 420 of the odd-numbered rows of the first channels (X1, X3 … … Xm-3, Xm-1).
In the present invention, the starting point 422 of each trace 420 of each second channel 220 is close to one side of the bonding pad 440.
Referring to fig. 4, fig. 4 is a detailed view of the area a in fig. 3. The present invention divides each trace 420 of each first channel 210 into three line segments. Taking the second group of first channels X2 as an example, the trace 421-2 of the second group of first channels X2 has three segments: a first line segment L1, a second line segment L2, and a third line segment L3.
The starting point of the first line segment L1 is located at the starting point 422b of the trace 421-2 of the second group first channel X2, and the first line segment L1 extends along the first direction away from the second group first channel X2.
The end point of the first line segment L1 is connected to the start point of the second line segment L2, the second line segment L2 extends away from the binding pad 440 in the second direction, and turns back toward the binding pad 440 in the second direction after the second line segment L2 extends for a certain length; that is, the second line segment L2 of each of the first channels 210 has a U-shape, and is U-shaped with an opening direction toward the binding pad 440 and parallel to the second direction.
The end point of the second line segment L2 is connected to the start point of the third line segment L3, and the end point of the third line segment L3 is located at the bond pad 440.
And so on, trace 421-4 of fourth set of first channel X4 has three segments: a first line segment L1 ', a second line segment L2 ', and a third line segment L3 '; trace 421-m of the mth group first channel Xm has three segments: a first line segment L1 ", a second line segment L2", and a third line segment L3 ".
The present invention makes each of the traces 420 of each of the first channels 210 have the same length, and based on the length of the trace 421-m of the mth group of first channels Xm farthest from the bonding pad 440, the sum of the lengths of the first line segment L1 ", the second line segment L2", and the third line segment L3 "of the trace 421-m of the mth group of first channels Xm is equal to the sum of the lengths of the first line segment L1, the second line segment L2, and the third line segment L3 of the trace 421-2 of the second group of first channels X2, and is also equal to the sum of the lengths of the first line segment L1 ', the second line segment L2 ', and the third line segment L3 ' of the trace 421-4 of the fourth group of first channels X4. By adjusting the length of the second line segment (L2, L2', L2 ″, … …), the length of each of the traces 420 of each of the first channels 210 can be controlled to be the same, that is, the trace 421-m of the mth group first channel Xm is equal to the length of any of the traces 420 of any of the first channels 210, so that the signal transmission speed of each of the first channels 210 is consistent.
Meanwhile, except for the trace 421-m of the mth group of first vias Xm farthest from the bond pad 440, the second line segment (L2, L2' … …) of each of the first vias 210 is U-shaped with an opening direction toward the bond pad 440 and parallel to the second direction, and the open area of the U-shape of each of the first channels 210 can be arranged with the U-shape of another of the first channels 210, for example, arranging the U-shapes of the second line segments L2 of the second group first passage X2 at a predetermined interval in the opening area of the U-shape of the second line segments L2' of the fourth group first passage X4, as such, the U-shaped design enables any trace 420 of any first channel 210 to be routed to any other trace without overlapping each other, and any of the traces 420 of any of the first vias 210 can have a suitable and dense trace area.
Referring to fig. 5, fig. 5 is a detailed view of a region B in fig. 3. The present invention divides the plurality of sets of second channels 220 into two sides by a central line 441 on the binding pad 440 parallel to the second direction. Each of the traces 420 of each of the second channels 220 is divided into three segments. Taking the third group of the second channel Y3 as an example, the trace 423-3 of the third group of the second channel Y3 has three segments: a fourth line segment L4, a fifth line segment L5, and a sixth line segment L6.
The starting point of the fourth line segment L4 is located at the starting point 424 of the trace 423-3 of the third group of second channels Y3, and the fourth line segment L4 extends in the second direction away from the third group of second channels Y3.
The end point of the fourth line segment L4 is connected to the start point of the fifth line segment L5, the fifth line segment L5 extends away from the binding pad 440 in the first direction, and turns back toward the binding pad 440 in the first direction after the fifth line segment L5 extends for a certain length; that is, the fifth line segment L5 of each of the second channels 220 has a U-shape, and is U-shaped with an opening direction facing the binding pad 440 and parallel to the first direction.
The end point of the fifth line segment L5 is connected to the start point of the sixth line segment L6, and the end point of the sixth line segment L6 is located at the bond pad 440.
And so on, trace 423-2 of the second group of second channels Y2 has three segments: a fourth line segment L4 ', a fifth line segment L5 ', and a sixth line segment L6 '; trace 423-1 of the first set of second lanes Y1 has three segments: a fourth line segment L4 ", a fifth line segment L5", and a sixth line segment L6 ".
The present invention makes each of the traces 420 of each of the second channels 220 have the same length, and based on the length of the trace 423-1 of the first group of second channels Y1 farthest from the bonding pad 440, the sum of the lengths of the fourth line segment L4 ", the fifth line segment L5" and the sixth line segment L6 "of the trace 423-1 of the first group of second channels Y1 is equal to the sum of the lengths of the fourth line segment L4, the fifth line segment L5 and the sixth line segment L6 of the trace 423-3 of the third group of second channels Y3, and the sum of the lengths of the fourth line segment L4 ', the fifth line segment L5' and the sixth line segment L6 'of the trace 423-2 of the second group of second channels Y2 is also equal to the sum of the lengths of the fourth line segment L4', the fifth line segment L5 'and the sixth line segment L6'. By adjusting the length of the fifth line segment (L5, L5', L5 ″, … …), the length of each of the traces 420 of each of the second channels 220 can be controlled to be the same, that is, the length of the trace 423-1 of the first group of second channels Y1 is equal to the length of any of the traces 420 of any of the second channels 220, so that the signal transmission speed of each of the second channels 220 is the same.
Meanwhile, the fifth line segment (L5, L5' … …) of each of the second channels 220, except for the trace 423-1 of the first group of second channels Y1 farthest from the bond pad 440, is U-shaped with an opening direction toward the bond pad 440 and parallel to the first direction, and the open area of the U-shape of each of the second channels 220 can be arranged with the U-shape of another of the second channels 220, for example, the U-shapes of the fifth line segment L5 of the third group second passage Y3 are arranged at a predetermined interval at the open area of the U-shape of the fifth line segment L5' of the second group second passage Y2, as such, the U-shaped design enables any of the traces 420 of any of the second channels 220 to be routed to the other via without overlapping each other, and any of the traces 420 of any of the second vias 220 can have a suitable and dense trace area.
The invention designs the U-shaped bent trace of the second segment (L2, L2 ', L2 ″' … …) or the fifth segment (L5, L5 ', L5 ″' … …) on each trace 420 to a certain extent, which may cause the width of the frame of the touch panel to be widened. However, taking the number of 35 × 17 channels as an example (35 sets of the first channels 210 and 17 sets of the second channels 220), each U-shape is arranged at a predetermined interval of preferably 30 μm, the width of the left and right side frames of the touch panel is about 1.1mm, and the width of the lower side frame of the touch panel (including the width of the bonding pad 440) is less than about 1.5 mm. Overall, the width of the touch panel frame is still very narrow, and the width of the touch panel frame is not excessively widened due to the U-shaped bent routing design, so that the frame visual experience of a user on the touch panel is not affected.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A touch panel, comprising:
a substrate;
the touch control layer is arranged on the substrate and comprises a pattern layer, an insulating layer and a bridge line layer which are sequentially laminated, the pattern layer comprises a plurality of first electrodes arranged along a first direction and a plurality of second electrodes arranged along a second direction, and the bridge line layer comprises a plurality of bridge lines, a plurality of routing lines and a binding pad; and
the protective layer is arranged on the touch layer;
multiple groups of first channels and multiple groups of second channels, wherein each first channel is composed of multiple first electrodes in the same row and multiple bridge wires parallel to the first direction in series connection, and each second channel is composed of multiple second electrodes in the same row and multiple bridge wires parallel to the second direction in series connection
Wherein the first direction and the second direction are perpendicular to each other;
the binding pads are arranged on one side edge close to the end points of the plurality of groups of second channels; and
one end of each first channel is electrically connected with the bonding pad through each wire, the length of each wire of each first channel is the same, one end of each second channel is electrically connected with the bonding pad through each wire, and the length of each wire of each second channel is the same.
2. The touch panel as recited in claim 1, wherein the starting points of the traces of the odd-numbered rows of the first channels are all on the same side, and the starting points of the traces of the even-numbered rows of the first channels are all on opposite sides of the starting points of the traces of the odd-numbered rows of the first channels.
3. The touch panel of claim 2, wherein each of the traces of each of the first channels is divided into a first segment, a second segment, and a third segment; and
the sum of the length of the first line segment, the length of the second line segment, and the length of the third line segment of each first channel is equal to the length of the trace of the first channel farthest from the bonding pad.
4. The touch panel of claim 3, wherein the second line segment of each of the first channels is a U-shape with an opening facing the bonding pad and parallel to the second direction, except for the trace of the first channel farthest from the bonding pad.
5. The touch panel of claim 4, wherein the open area of the U-shape of the second line segment of each of the first channels is arranged with a predetermined pitch in the U-shape of the second line segment of another of the first channels.
6. The touch panel of claim 1, wherein the starting point of each trace of each second channel is close to one side of the bonding pad.
7. The touch panel of claim 6, wherein a center line parallel to the second direction on the bonding pad divides the plurality of second channels into two sides;
each routing wire of each second channel is divided into a fourth wire segment, a fifth wire segment and a sixth wire segment; and
the sum of the length of the fourth line segment, the length of the fifth line segment, and the length of the sixth line segment of each second channel is equal to the length of the trace of the second channel farthest from the bonding pad.
8. The touch panel of claim 7, wherein the fifth line segment of each of the second channels is U-shaped with an opening direction facing the bonding pad and parallel to the first direction, except for the trace of the second channel farthest from the bonding pad.
9. The touch panel of claim 8, wherein the open area of the U-shape of the fifth line segment of each of the second channels is arranged with U-shapes of the fifth line segments of the other of the second channels at a predetermined interval.
10. The touch panel of claim 5 or 9, wherein the one predetermined pitch is about 30 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911371602.7A CN111158535A (en) | 2019-12-26 | 2019-12-26 | Wiring structure of touch panel |
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| CN201911371602.7A CN111158535A (en) | 2019-12-26 | 2019-12-26 | Wiring structure of touch panel |
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| CN111158535A true CN111158535A (en) | 2020-05-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022246680A1 (en) * | 2021-05-26 | 2022-12-01 | 京东方科技集团股份有限公司 | Display substrate and display apparatus |
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| CN203799347U (en) * | 2014-01-09 | 2014-08-27 | 宸鸿科技(厦门)有限公司 | Touch panel |
| CN205318347U (en) * | 2015-12-29 | 2016-06-15 | 上海中航光电子有限公司 | Touch control display panel |
| CN206193731U (en) * | 2016-10-26 | 2017-05-24 | 上海天马微电子有限公司 | Touch display panel and display device |
| CN107589576A (en) * | 2017-09-30 | 2018-01-16 | 武汉华星光电技术有限公司 | Array base palte and preparation method thereof, touch-control display panel |
| CN108829285A (en) * | 2018-06-12 | 2018-11-16 | 武汉华星光电半导体显示技术有限公司 | Touch panel and preparation method thereof |
| CN108874227A (en) * | 2018-06-29 | 2018-11-23 | 上海天马微电子有限公司 | Display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022246680A1 (en) * | 2021-05-26 | 2022-12-01 | 京东方科技集团股份有限公司 | Display substrate and display apparatus |
| US12443300B2 (en) | 2021-05-26 | 2025-10-14 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display substrate and display apparatus |
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