CN107843996B - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
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- CN107843996B CN107843996B CN201710990851.9A CN201710990851A CN107843996B CN 107843996 B CN107843996 B CN 107843996B CN 201710990851 A CN201710990851 A CN 201710990851A CN 107843996 B CN107843996 B CN 107843996B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
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Abstract
The invention provides a touch display panel and a display device, wherein the touch display panel comprises: the liquid crystal display panel comprises an upper substrate, a lower substrate and a liquid crystal layer positioned between the upper substrate and the lower substrate, wherein the upper substrate is positioned on one side of the lower substrate facing a user; the upper substrate comprises a touch detection structure and pixel units arranged in an array, each pixel unit comprises a switch element and a pixel electrode, the touch detection structure comprises a plurality of touch electrodes and a plurality of touch signal lines, and the touch signal lines are electrically connected to the corresponding touch electrodes respectively; the lower substrate comprises a reflection electrode, the reflection electrode comprises a plurality of auxiliary signal lines, and two ends of the auxiliary signal lines are electrically connected with two ends of the corresponding touch signal lines respectively. In the touch display panel provided by the invention, the reflecting electrode is reused as the auxiliary signal line of the touch electrode, so that the resistance value of the touch signal line is reduced, and the touch performance is improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a touch display panel and a display device.
Background
With the development of scientific technology, the display device with the display panel has more and more extensive applications, people have more and more requirements on touch performance, and the technical development trend is that an integrated touch control scheme in the display panel replaces an external touch control scheme.
The mainstream reflective liquid crystal display devices such as an existing electronic control birefringence liquid crystal display (ECB-LCD), a twisted nematic liquid crystal display (TN-LCD), a vertical alignment technology liquid crystal display (VA-LCD) and the like generally comprise an array substrate, a color film substrate and a backlight module, wherein the array substrate is positioned between the color film substrate and the backlight module, the color film substrate is positioned between the array substrate and a user, and a touch detection structure of an embedded (cell) touch display device is generally integrated on the array substrate and is time-division multiplexed with a display electrode or a metal wiring in the array substrate or formed on the same layer, so that the process is reduced, the cost is reduced and the thickness of the touch display device is reduced; meanwhile, the color film substrate is provided with a common electrode, and a voltage difference is formed between the common electrode and a pixel electrode on the array substrate, so that liquid crystal molecules in the liquid crystal layer are driven to change the state of the liquid crystal molecules, the polarization direction of light penetrating through the liquid crystal layer is changed, and image display is realized. Therefore, a whole or large-area display electrode is spaced between a user (a viewer or a touch operator) and the touch detection structure, and a common signal is generally accessed, and when an embedded touch integration design is performed on one side of the array substrate, an external touch signal is shielded by the display electrode layer on one side of the upper color film substrate, so that the touch signal is invalid, and a touch function cannot be realized.
In addition, in the conventional touch device, the resistance of the touch signal line electrically connected to the touch electrode at the end far from the touch chip is high, which affects the touch sensitivity of the touch electrode at the far end.
Disclosure of Invention
The present invention provides a touch display panel and a display device, so as to solve the problem that the resistance of a touch signal line of the conventional touch display panel and display device is large and the touch sensitivity of the conventional touch display panel and display device is affected.
First, the present invention provides a touch display panel, comprising: the liquid crystal display panel comprises an upper substrate, a lower substrate and a liquid crystal layer positioned between the upper substrate and the lower substrate, wherein the upper substrate comprises a touch detection structure and pixel units which are arranged in an array manner, each pixel unit comprises a switch element and a pixel electrode, the touch detection structure comprises a plurality of touch electrodes and a plurality of touch signal wires, and the touch signal wires are respectively and electrically connected to the corresponding touch electrodes; the lower substrate comprises a reflection electrode, the reflection electrode comprises a plurality of auxiliary signal lines, and two ends of the auxiliary signal lines are electrically connected with two ends of the corresponding touch signal lines respectively.
In an embodiment of the invention, the touch electrode is time-division multiplexed as a storage electrode.
In one embodiment of the present invention, the reflective electrode is time-division multiplexed into a common electrode.
In an embodiment of the present invention, the upper substrate further includes a metal trace and a black matrix, the black matrix is located on a side of the metal trace facing the upper substrate of the upper substrate, and a projection of the metal trace on the upper substrate is located in a projection of the black matrix on the upper substrate.
In an embodiment of the present invention, an orthographic projection of the black matrix on the lower substrate covers a slit between adjacent auxiliary signal lines.
In an embodiment of the invention, the touch display panel further includes a display area, a non-display area surrounding the display area, and a driving chip located at one end of the upper substrate; the head end of the touch signal wire is electrically connected to the driving chip, and the tail end of the touch signal wire is positioned at one end of the upper substrate, which is far away from the driving chip; the first end of the auxiliary signal line is electrically connected to the head end of the touch signal line, and the second end of the auxiliary signal line is electrically connected to the tail end of the touch signal line.
In an embodiment of the invention, two ends of the auxiliary signal line are electrically connected to two ends of the corresponding touch signal line respectively through the conductive particles located in the non-display area.
In an embodiment of the invention, the touch display panel further includes a color filter, and the color filter is located between the liquid crystal layer and the reflective electrode; or, the color filter is positioned in the upper substrate.
In one embodiment of the present invention, the lower substrate further includes a lower substrate, and the reflective electrode is located on a side of the lower substrate facing the liquid crystal layer.
In addition, the invention also provides a display device which comprises any one of the touch display panels.
Compared with the prior art, the technical scheme provided by the invention has the following advantages: the invention provides a touch display panel, comprising: the liquid crystal display panel comprises an upper substrate, a lower substrate and a liquid crystal layer positioned between the upper substrate and the lower substrate, wherein the upper substrate is positioned on one side of the lower substrate facing a user; the upper substrate comprises a touch detection structure and pixel units arranged in an array, each pixel unit comprises a switch element and a pixel electrode, the touch detection structure comprises a plurality of touch electrodes and a plurality of touch signal lines, and the touch signal lines are electrically connected to the corresponding touch electrodes respectively; the lower substrate comprises a reflection electrode, the reflection electrode comprises a plurality of auxiliary signal lines, and two ends of the auxiliary signal lines are electrically connected with two ends of the corresponding touch signal lines respectively. In the touch display panel provided by the invention, the reflecting electrode is reused as an auxiliary signal line of the touch electrode and is arranged in parallel with the touch signal line, so that the resistance value of the touch signal line is reduced, the touch performance is improved and the manufacturing process and the cost of a product are not increased while the aperture opening ratio of the panel is not influenced; meanwhile, the touch detection structure is positioned on one side of the touch display panel close to a user, and an external touch signal provided by the user cannot be shielded by display electrodes such as a whole surface or a large-area common electrode, so that a touch function can be better realized.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 is a cross-sectional view of a touch display panel according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a touch detection structure of the touch display panel shown in FIG. 1;
FIG. 3 is a schematic diagram of a reflective electrode according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a connection manner of a touch detection structure according to another embodiment of the invention;
FIG. 5 is a cross-sectional view of a touch display panel according to another embodiment of the present invention;
FIG. 6 is a cross-sectional view of a touch display panel according to another embodiment of the present invention;
fig. 7 is a cross-sectional view of a touch display panel according to still another embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
First, the present invention provides a touch display panel, specifically referring to fig. 1 and 2, where fig. 1 is a cross-sectional view of a touch display panel provided in an embodiment of the present invention, fig. 2 is a schematic diagram of a touch detection structure in the touch display panel shown in fig. 1, the touch display panel is a reflective touch display panel, and includes an upper substrate 10, a lower substrate 20 disposed opposite to the upper substrate 10, and a liquid crystal layer 30 located between the upper substrate 10 and the lower substrate 20, where the upper substrate 10 is located between a user (an observer or a touch operator) and the lower substrate 20.
In this embodiment, the upper substrate 10 is an array substrate, the array substrate includes an upper substrate 11 made of a transparent material such as glass, and a touch detection structure 12 disposed on the upper substrate 11, and the touch detection structure 12 is located on a side of the upper substrate 11 facing the lower substrate 20. In the embodiment of the present invention, the touch mode of the touch detection structure may be self-capacitance type or mutual capacitance type, and may also be pressure-sensing touch. Taking the self-capacitance as an example, the touch detection structure 12 includes a plurality of touch electrodes 121 and a plurality of touch signal lines S arranged in an array, the touch display panel further includes a display area a, a non-display area B disposed around the display area a, and a driving chip 40 located at one end of the upper substrate 10. The touch electrodes 121 are located in the display area a, and each touch electrode 121 is electrically connected to a port of the driving chip 40 for outputting a scan signal and receiving a detection signal through a corresponding touch signal line S. When a user touches the touch panel, the capacitance between the touch electrode 121 corresponding to the touch position and the ground changes, so that the detection signal on the touch electrode 121 at the touch position changes, and the driving chip 40 can determine the touch position through the received detection signal, so that the display panel executes a corresponding operation. The touch electrode may be a transparent conductive layer, and the transparent conductive layer may be made of metal oxide, for example: indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium germanium zinc oxide, or other suitable oxide, or a stack of at least two of the foregoing. The touch signal line S may be formed by an additionally disposed metal trace, and may be electrically connected to a corresponding touch electrode through, for example, a connection hole, so as to reduce a touch resistance and improve a sensitivity of touch detection.
In this embodiment, the upper substrate 10 further includes a plurality of metal traces, and the metal traces may include, for example, a plurality of data lines arranged in parallel and a plurality of scan lines arranged in parallel, and the plurality of data lines and the plurality of scan lines are arranged in a cross manner to define a plurality of pixel units arranged in an array. Each pixel unit includes at least one scan line, at least one data line, at least one switching element T, and at least one pixel electrode 14. Each switching element T includes a gate electrode, a semiconductor channel overlapping the gate electrode, a gate insulating layer disposed between the gate electrode and the semiconductor channel, and a source electrode and a drain electrode electrically connected to both sides of the semiconductor channel, respectively. The gate of the switching element T is electrically connected to the scan line, and the source of the switching element T is electrically connected to the data line. The pixel electrode 14 is electrically connected to the drain of the switching element T. In the present embodiment, the gate and the scan line can be selectively formed by the same film layer; the touch signal line S may be formed on the same film layer as the scan line, the source and the data line may be formed on the same film layer, and the touch signal line S may be formed on the same film layer as the data line. However, the invention is not limited thereto, and in other embodiments, the film relationship between the gate and the scan line and/or the film relationship between the source and the data line may be designed appropriately according to actual requirements. The pixel electrode 14 may be made of a transparent conductive material such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium germanium zinc oxide, or the like.
Further, in the present embodiment, the touch electrode 121 is reused as a storage electrode, and in each pixel unit, the storage electrode and the pixel electrode 14 form a storage capacitor to provide a storage voltage for each pixel unit, and in order to improve the light transmittance of the touch display panel, the material of the touch electrode 121 may be, for example, a transparent conductive material such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium germanium zinc oxide, and the like. In other embodiments, the storage electrode may be independently disposed and has a film structure different from that of the touch electrode.
The upper substrate 10 further includes a black matrix 13, the black matrix 13 is located on the upper substrate 11 and corresponds to an area where the metal trace and the switching element T are located on the upper substrate, the black matrix 13 is located on a side of the metal trace and the switching element T facing the upper substrate 11, and an orthographic projection of the metal trace and the switching element T on the upper substrate is located within an orthographic projection range of the black matrix 13 on the upper substrate, wherein the metal trace is, for example, the scan line, the data line, the touch signal line, and the like. Because the upper substrate 10 is an array substrate and the black matrix 13 is prepared on the array substrate, the requirement of the touch display panel on the cell precision is obviously reduced, and the formation area of the black matrix 13 is not overlapped with the formation area of the pixel electrode 14, the aperture opening ratio of the liquid crystal display panel is not affected, and meanwhile, the light leakage phenomenon generated in the area except the pixel electrode is avoided, and the display performance of the touch display panel is improved.
Further, the upper substrate 10 may further include a planarization layer 15, and the planarization layer 15 is, for example, a light-transmitting organic insulating film, and is planarized by absorbing a step formed by a metal trace, a switching element, or the like located below the pixel electrode 14 so as to planarize the pixel electrode. The flat layer 15 is provided with a via hole, and the pixel electrode 14 is located on one side of the flat layer 15 away from the switching element T and the metal trace, and is electrically connected to the drain of the active element T through the via hole. The material of the planarization layer 15 can be an inorganic material (e.g., silicon oxide, silicon nitride, silicon oxynitride, other suitable materials, or a stack of at least two of the above materials), an organic material, or other suitable materials, or a combination thereof.
The lower substrate 20 includes a lower substrate 21 and a reflective electrode 22 disposed on the lower substrate 21, and is configured to reflect external light, such as external natural light, which is emitted from the outside of the touch display panel to the upper substrate, the liquid crystal layer and enters the reflective electrode 22. The reflective electrode 22 is formed by vapor deposition using a metal material such as aluminum or silver, or a compound or an alloy containing a metal material such as aluminum or silver as one component. As shown in fig. 3, the reflective electrode 22 includes a plurality of electrode bars separately disposed, each electrode bar forms an auxiliary signal line 202, two adjacent auxiliary signal lines 202 are disposed at intervals through a slit insulation, and the plurality of auxiliary signal lines 202 are respectively disposed corresponding to the plurality of touch electrodes 121. Specifically, each auxiliary signal line 202 is connected in parallel with at least one touch signal line S, or two ends of each auxiliary signal line 202 are electrically connected to two ends of the at least one touch signal line S, respectively, and the at least one touch signal line S is electrically connected to the touch electrode 121 corresponding to the auxiliary signal line 202. Therefore, the resistance of the connecting wires between the touch electrodes and the driving chip can be reduced, the sensitivity of touch detection is improved, and the resistance reduction of the touch electrode farthest from the driving chip is particularly effective.
Referring to fig. 4, a plurality of touch signal lines S pass through the display area a of the touch display panel, a head end S1 of the touch signal line S is electrically connected to the driving chip 40, and a tail end S2 of the touch signal line S is located at an end of the upper substrate 10 away from the driving chip 40. The first end 202a of each auxiliary signal line 202 is electrically connected to the head end S1 of the corresponding touch signal line S, and the second end 202b of each auxiliary signal line 202 is electrically connected to the tail end S2 of the corresponding touch signal line S, so that each auxiliary signal line is connected in parallel with the corresponding touch signal line. In the present embodiment, the touch display panel further includes a sealant 32 disposed in the non-display region B and surrounding the display region a, wherein the sealant 32 is disposed between the upper substrate 10 and the lower substrate 20 for sealing the liquid crystal layer 30 in a box-shaped space formed by the upper substrate 10 and the lower substrate 20. The conductive particles 301 are disposed in the sealant 32, and two ends of each auxiliary signal line 202 can be electrically connected to two ends of the corresponding touch signal line S through the conductive particles 301 disposed in the sealant 32, respectively. The conductive particles may be, for example, spherical resin particles with certain elasticity, the outer layer of which is plated with metal (such as gold, silver, etc.), so as to achieve electrical conduction, and the plurality of conductive particles in the frame sealing glue are not in contact with each other, so that the conductive particles only have the function of conducting connection wires on the upper and lower substrates, but cannot conduct electrical conduction in the transverse direction.
Further, in the present embodiment, as shown in fig. 5, it may be configured that: a strip-shaped slit 203 is formed between two adjacent auxiliary signal lines 202, and the slit 203 is located in an orthographic projection range of the black matrix 13 on the lower substrate 20, that is, the orthographic projection of the black matrix 13 on the lower substrate 20 covers the slit 203, so that although a reflection area cannot be formed at the position of the slit 203 on the reflection electrode 22, the existence of the slit 203 does not affect the aperture ratio of the touch display panel because the area is blocked by the black matrix 13. Meanwhile, the auxiliary signal line connected with the touch signal line in parallel is arranged on the lower substrate, and is not simultaneously positioned on the upper substrate like the touch signal line, so that the opening position of a pixel unit on the upper substrate is not occupied, and the purpose of reducing the resistance of connecting wires between the touch electrode and the driving chip without reducing the opening ratio can be achieved. And because the auxiliary signal line is formed by time division multiplexing of the reflecting electrode, an additional independent arrangement is not needed, the product manufacturing process is not increased, and the manufacturing cost is not increased.
Further, the upper substrate and the lower substrate are respectively provided with an alignment film on the side close to the liquid crystal layer, for example, to provide an initial alignment for the liquid crystal molecules of the liquid crystal layer.
Furthermore, the upper substrate and the lower substrate are respectively provided with a polarizer on the side away from the liquid crystal layer, for example, to change the polarization direction of incident light or emergent light.
In an embodiment of the present invention, the reflective electrode 22 can be multiplexed as a common electrode, in the display phase, a common voltage signal is provided to the reflective electrode 22 by the driving chip, the switching elements T are enabled to independently drive the pixel electrodes 14 according to the signals from the scan lines, and a potential difference is formed between the pixel electrodes 14 and the reflective electrode 22 according to the signals from the data lines, so as to drive the liquid crystal molecules of the liquid crystal layer to change states. In this state, external light incident from the upper substrate 10 side is incident on the reflective electrode 22 of the lower substrate via the liquid crystal layer, is reflected to each pixel electrode 14 via the reflective electrode 22, and is matched with the polarizing devices on the upper and lower substrates, whereby reflected light based on the transmittance of the pixel electrode 14 set according to the angle of the liquid crystal molecules of the liquid crystal layer is displayed as an image; in the touch control stage, touch control scanning signals are respectively provided for the touch control electrodes through the touch control signal lines and the auxiliary signal lines in the reflecting electrodes, and touch control detection signals are received through the touch control signal lines and the auxiliary signal lines in the reflecting electrodes, so that the touch control detection function is realized.
Furthermore, the touch electrode can be reused as a storage electrode, and in the display stage, a common voltage signal is provided to the touch electrode through the driving chip, so that a storage capacitor is formed between the touch electrode and the pixel electrode, and a storage voltage is provided for each pixel unit.
The liquid crystal layer 30 can use various modes such as an ECB mode, a TN mode, and a VA mode. For example, the liquid crystal layer 30 is a Twisted Nematic (TN) Normally White (NW) mode.
In the touch display panel provided in this embodiment, for each pixel unit, under the driving of the voltage difference between the pixel electrode and the common electrode, the liquid crystal molecules of the liquid crystal layer undergo state changes such as rotation and/or distortion, and the liquid crystal molecules are matched with the polarization device on the upper substrate, so that each pixel unit has two states of an off state and an on state in a time-sharing manner, when the pixel unit is in the off state, the light reflected from the reflective electrode cannot pass through the pixel unit, and at this time, the pixel unit displays black; when the pixel units are in an on state, light reflected by the self-reflection electrodes passes through the pixel units, at the moment, the pixel units display white, and each pixel unit is made to display black or white required by different images by controlling data signals provided by the data lines electrically connected with the pixel units, so that the touch display panel can display black and white images by using external natural light (such as sunlight), a backlight source is not required to be additionally arranged, and power consumption is saved.
Furthermore, in the touch display panel provided in this embodiment, the array substrate provided with the touch detection structure is located on the side of the liquid crystal layer facing the user, and the reflective electrode is located on the side of the liquid crystal layer away from the user, that is, the space between the touch detection structure and the user does not contain display electrodes such as a full-area or large-area common electrode, and an external touch signal provided by the user is not shielded by the display electrodes such as the full-area or large-area common electrode, so that the touch function can be better realized.
Fig. 6 is a cross-sectional view of a touch display panel according to still another embodiment of the present invention, in this embodiment, the touch display panel further includes a color filter 23, the color filter 23 is located on the lower substrate, the reflective electrode 22 is located on a side of the lower substrate facing the liquid crystal layer, and the color filter 23 is located on a side of the reflective electrode 22 facing the liquid crystal layer on the lower substrate, so that light reflected from the reflective electrode 22 can be transmitted to the liquid crystal layer through the color filter 23, the color filter 23 may include, for example, a red color resistor, a green color resistor, and a blue color resistor, each color resistor is respectively disposed corresponding to one pixel unit on the array substrate, so that light emitted from each pixel unit displays a corresponding color. The adjacent color resistors can be arranged at intervals through a black matrix, for example, so as to prevent the color mixing phenomenon; the black matrix on the array substrate can cover the connection area between the adjacent color resistors to prevent color mixing. In the touch display panel provided by the embodiment, the color image display can be realized by using external natural light (such as sunlight), so that the power consumption is reduced.
Fig. 7 is a cross-sectional view of a touch display panel according to still another embodiment of the present invention, in this embodiment, the touch display panel further includes a color filter 23, the color filter 23 is located on the upper substrate 10, the reflective electrode 22 is located on the lower substrate, light reflected from the reflective electrode 22 passes through the color filter 23, the color filter 23 may include, for example, a red color resistor, a green color resistor, and a blue color resistor, each color resistor is respectively disposed corresponding to one pixel unit on the array substrate, so that the light emitted from each pixel unit displays a color corresponding to the color resistor. The adjacent color resists may be spaced apart by a black matrix, for example, to prevent color mixing. The touch display panel can realize color image display by using external natural light (such as sunlight), and power consumption is saved. And because the color filter and the black matrix are both positioned on the upper substrate, and the upper substrate is an array substrate, the requirement of the lower substrate and the array substrate on the box precision is reduced, and the aperture opening ratio is further improved.
In addition, the invention also provides a display device which comprises the touch display panel.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A touch display panel, comprising: the liquid crystal display panel comprises an upper substrate, a lower substrate and a liquid crystal layer positioned between the upper substrate and the lower substrate, wherein the upper substrate is positioned on one side of the lower substrate facing a user; the upper substrate comprises a touch detection structure and pixel units arranged in an array, each pixel unit comprises a switch element and a pixel electrode, the touch detection structure comprises a plurality of touch electrodes and a plurality of touch signal lines, and the touch signal lines are electrically connected to the corresponding touch electrodes respectively;
the lower substrate comprises a reflection electrode, the reflection electrode comprises a plurality of auxiliary signal lines, and two ends of the auxiliary signal lines are electrically connected with two ends of the corresponding touch signal lines respectively.
2. The touch display panel of claim 1, wherein the touch electrodes are time-multiplexed as storage electrodes.
3. The touch display panel of claim 1, wherein the reflective electrode is time-multiplexed as a common electrode.
4. The touch display panel of claim 1, wherein the upper substrate further comprises metal traces and a black matrix, the black matrix is located on a side of the metal traces facing the upper substrate of the upper substrate, and an orthogonal projection of the metal traces on the upper substrate is located within an orthogonal projection of the black matrix on the upper substrate.
5. The touch display panel of claim 4, wherein an orthographic projection of the black matrix on the lower substrate covers a slit between adjacent auxiliary signal lines.
6. The touch display panel according to claim 1, further comprising a display area, a non-display area surrounding the display area, and a driving chip at one end of the upper substrate;
the head end of the touch signal line is connected to the driving chip, and the tail end of the touch signal line is located at one end, far away from the driving chip, of the upper substrate; the first end of the auxiliary signal line is electrically connected to the head end of the touch signal line, and the second end of the auxiliary signal line is electrically connected to the tail end of the touch signal line.
7. The touch display panel of claim 6, wherein two ends of the auxiliary signal line are electrically connected to two ends of the corresponding touch signal line respectively through the conductive particles located in the non-display area.
8. The touch display panel according to claim 1, further comprising a color filter disposed between the liquid crystal layer and the reflective electrode;
or, the color filter is positioned in the upper substrate.
9. The touch display panel of claim 1, wherein the lower substrate further comprises a lower substrate, and the reflective electrode is located on a side of the lower substrate facing the liquid crystal layer.
10. A display device comprising the touch display panel according to any one of claims 1 to 9.
Priority Applications (1)
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|---|---|---|---|
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| CN108469927B (en) * | 2018-04-28 | 2021-02-09 | 上海天马微电子有限公司 | Touch display panel, driving method thereof and touch display device |
| CN108920031B (en) * | 2018-07-25 | 2021-05-18 | 京东方科技集团股份有限公司 | Reflective touch substrate and display device |
| CN110618550B (en) * | 2019-09-25 | 2023-09-08 | 京东方科技集团股份有限公司 | Display panel and manufacturing method thereof |
| CN111026294B (en) * | 2020-01-02 | 2023-09-01 | 武汉天马微电子有限公司 | Display panel and display device |
| CN112925440A (en) * | 2021-02-09 | 2021-06-08 | 捷开通讯(深圳)有限公司 | Touch control display device |
| CN115016667B (en) * | 2021-11-30 | 2023-06-06 | 荣耀终端有限公司 | Touch display panel, driving method and touch display device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006221021A (en) * | 2005-02-14 | 2006-08-24 | Sanyo Epson Imaging Devices Corp | Liquid crystal display and electronic device |
| CN102955636A (en) * | 2012-10-26 | 2013-03-06 | 北京京东方光电科技有限公司 | Capacitance-type built-in touch screen and display device |
| JP2014174607A (en) * | 2013-03-06 | 2014-09-22 | Toppan Printing Co Ltd | Manufacturing method of capacitance type touch panel sensor substrate, capacitance type touch panel sensor substrate and display device |
| CN104820514A (en) * | 2015-04-01 | 2015-08-05 | 上海中航光电子有限公司 | Touch display panel and driving method thereof |
| CN105159520A (en) * | 2015-10-23 | 2015-12-16 | 京东方科技集团股份有限公司 | Self-capacitance touch display panel, driving method thereof and touch display device |
| CN205247009U (en) * | 2015-12-11 | 2016-05-18 | 厦门天马微电子有限公司 | Integrated touch -control display panel and integrated touch -sensitive display device |
| CN205375442U (en) * | 2015-12-11 | 2016-07-06 | 上海中航光电子有限公司 | Touch display device |
| CN206178745U (en) * | 2016-11-03 | 2017-05-17 | 上海天马微电子有限公司 | Display device |
-
2017
- 2017-10-23 CN CN201710990851.9A patent/CN107843996B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006221021A (en) * | 2005-02-14 | 2006-08-24 | Sanyo Epson Imaging Devices Corp | Liquid crystal display and electronic device |
| CN102955636A (en) * | 2012-10-26 | 2013-03-06 | 北京京东方光电科技有限公司 | Capacitance-type built-in touch screen and display device |
| JP2014174607A (en) * | 2013-03-06 | 2014-09-22 | Toppan Printing Co Ltd | Manufacturing method of capacitance type touch panel sensor substrate, capacitance type touch panel sensor substrate and display device |
| CN104820514A (en) * | 2015-04-01 | 2015-08-05 | 上海中航光电子有限公司 | Touch display panel and driving method thereof |
| CN105159520A (en) * | 2015-10-23 | 2015-12-16 | 京东方科技集团股份有限公司 | Self-capacitance touch display panel, driving method thereof and touch display device |
| CN205247009U (en) * | 2015-12-11 | 2016-05-18 | 厦门天马微电子有限公司 | Integrated touch -control display panel and integrated touch -sensitive display device |
| CN205375442U (en) * | 2015-12-11 | 2016-07-06 | 上海中航光电子有限公司 | Touch display device |
| CN206178745U (en) * | 2016-11-03 | 2017-05-17 | 上海天马微电子有限公司 | Display device |
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