CN107678217B - Liquid crystal display panel and liquid crystal display device - Google Patents
Liquid crystal display panel and liquid crystal display device Download PDFInfo
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- CN107678217B CN107678217B CN201711059502.1A CN201711059502A CN107678217B CN 107678217 B CN107678217 B CN 107678217B CN 201711059502 A CN201711059502 A CN 201711059502A CN 107678217 B CN107678217 B CN 107678217B
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- liquid crystal
- crystal display
- display panel
- pressure sensor
- sensing
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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
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of 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
- G02F1/13338—Input devices, e.g. touch panels
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
Abstract
The invention discloses a liquid crystal display panel and a liquid crystal display device, wherein the liquid crystal display panel comprises an array substrate, a color film substrate and a liquid crystal layer positioned between the array substrate and the color film substrate; the plurality of conductors are positioned between the array substrate and the color film substrate and positioned in the peripheral circuit area; the first conductive leads are positioned on one side, close to the liquid crystal layer, of the color film substrate; and at least one of the first power signal input end, the second power signal input end, the first sensing signal output end and the second sensing signal output end is electrically connected with the first conductive lead one by one through corresponding electric conductors. By the technical scheme of the invention, the space occupied by the signal wire electrically connected with the pressure sensor in the peripheral circuit area is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a liquid crystal display panel and a liquid crystal display device.
Background
At present, a display panel with a touch function is widely used as an information input tool in various electronic devices, such as an information query machine in a hall of a public place, a computer and a mobile phone used by a user in daily life and work. Therefore, the user can operate the electronic equipment by only touching the mark on the touch display screen with fingers, dependence of the user on other input equipment such as a keyboard and a mouse is eliminated, and man-machine interaction is more direct, simple and convenient. In order to better meet the user requirements, a pressure sensor for detecting the touch pressure of a user in the process of touching the touch display screen is usually arranged in the touch display screen, and the pressure sensor can acquire touch position information and also can acquire the size of the touch pressure, so that the application range of the touch display technology is enriched.
Generally include a plurality of pressure sensor among the display panel, every pressure sensor all includes two power signal input ends and two sensing signal output end, and two power signal input ends and two sensing signal output end correspond four signal lines that are located display panel peripheral circuit district promptly, along with the increase of pressure sensor quantity among the display panel, the quantity of the signal line that corresponds with pressure sensor increases at double, the great space of display panel peripheral circuit district has been occupied, greatly increased the width of display panel frame, be unfavorable for the realization of the narrow frame of display panel.
Disclosure of Invention
In view of the above, the present invention provides a liquid crystal display panel and a liquid crystal display device, in which a conductive body is disposed between an array substrate and a color film substrate of the liquid crystal display panel, a first conductive lead is disposed on a side of the color film substrate adjacent to a liquid crystal layer, and at least one of a first power signal input terminal, a second power signal input terminal, a first sensing signal output terminal and a second sensing signal output terminal of a pressure sensor is disposed to be electrically connected to the first conductive lead one by one through a corresponding conductive body, that is, a trace on the color film substrate side is used as a signal line electrically connected to the pressure sensor for detecting a pressure of a touch main body pressing the liquid crystal display panel, so that a space of a peripheral circuit area of the liquid crystal display panel occupied by the signal line electrically connected to the pressure sensor is greatly reduced, which is beneficial.
In a first aspect, an embodiment of the present invention provides a liquid crystal display panel, including a display area and a peripheral circuit area surrounding the display area;
the liquid crystal display panel comprises an array substrate, a color film substrate and a liquid crystal layer positioned between the array substrate and the color film substrate;
a plurality of conductors positioned between the array substrate and the color film substrate, wherein the conductors are positioned in the peripheral circuit region;
the first conductive leads are positioned on one side, close to the liquid crystal layer, of the color film substrate;
the array substrate comprises a liquid crystal layer, a plurality of pressure sensors and a plurality of first conductive leads, wherein the liquid crystal layer is arranged on the array substrate, the plurality of pressure sensors are positioned on one side, close to the liquid crystal layer, of the array substrate, each pressure sensor comprises a first power supply signal input end, a second power supply signal input end, a first sensing signal output end and a second sensing signal output end, and at least one of the first power supply signal input end, the second power supply signal input end, the first sensing signal output end and the second sensing signal output end is electrically connected with the first conductive leads one by one through the corresponding.
In a second aspect, an embodiment of the present invention further provides a liquid crystal display device, including the liquid crystal display panel according to the first aspect.
The embodiment of the invention provides a liquid crystal display panel and a liquid crystal display device, wherein a conductive body is arranged between an array substrate and a color film substrate of the liquid crystal display panel, a first conductive lead is arranged at one side of the color film substrate close to a liquid crystal layer, and at least one of a first power supply signal input end, a second power supply signal input end, a first sensing signal output end and a second sensing signal output end of a pressure sensor is electrically connected with the first conductive lead one by one through the corresponding conductive body, namely, a routing wire at the side of the color film substrate is used as a signal wire which is electrically connected with the pressure sensor and is used for detecting the pressure of the liquid crystal display panel pressed by a touch main body, the signal wires electrically connected with the pressure sensor are prevented from being routed by a peripheral circuit area at the side of the array substrate of the liquid crystal display panel, the space of the peripheral circuit area of the liquid crystal display, the realization of the narrow frame of the liquid crystal display panel is facilitated.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic top view of an lcd panel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view along the direction AA' in FIG. 1;
fig. 3 is a schematic top view of another lcd panel according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view taken along the direction CC' in FIG. 3;
fig. 5 is a schematic structural diagram of an annular retaining wall structure according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a top view structure of another LCD panel according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view taken along direction DD' in FIG. 6;
FIG. 8 is a schematic cross-sectional view illustrating another LCD panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a pressure sensor according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of another pressure sensor provided in accordance with an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of another pressure sensor provided in accordance with an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a liquid crystal display device according to an 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. Throughout this specification, the same or similar reference numbers refer to the same or similar structures, elements, or processes. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The embodiment of the invention provides a liquid crystal display panel, which comprises a display area and a peripheral circuit area surrounding the display area, and further comprises an array substrate, a color film substrate, a liquid crystal layer positioned between the array substrate and the color film substrate, a plurality of electric conductors positioned between the array substrate and the color film substrate and positioned in the peripheral circuit area, a plurality of first electric lead wires and a plurality of pressure sensors positioned at one side of the array substrate close to the liquid crystal layer, wherein the first electric lead wires are positioned at one side of the color film substrate close to the liquid crystal layer, each pressure sensor comprises a first power signal input end, a second power signal input end, a first sensing signal output end and a second sensing signal output end, at least one of the first power signal input end, the second power signal input end, the first sensing signal output end and the second sensing signal output end is electrically connected with the first conductive lead one by one through the corresponding electric conductor.
Generally include a plurality of pressure sensor in the liquid crystal display panel with pressure detection function, every pressure sensor includes four signal ends, the signal line of four signal end electricity connections with every pressure sensor all need utilize the drive module electricity in the peripheral circuit region of liquid crystal display panel array base plate to connect in order to realize the pressure sensing function, namely every pressure sensor all corresponds four signal lines that need utilize the peripheral circuit region of liquid crystal display panel array base plate to walk the line, along with the increase of pressure sensor quantity in the liquid crystal display panel, the quantity of the signal line that corresponds with pressure sensor increases at double, the great space of liquid crystal display panel peripheral circuit region has been occupied, the width of liquid crystal display panel frame has greatly increased, be unfavorable for the realization of the narrow frame of liquid crystal display panel.
In the embodiment of the invention, the electric conductor is arranged between the array substrate and the color film substrate of the liquid crystal display panel, arranging a first conductive lead on one side of the color film substrate close to the liquid crystal layer, and arranging at least one of a first power signal input end, a second power signal input end, a first sensing signal output end and a second sensing signal output end of the pressure sensor to be electrically connected with the first conductive lead one by one through corresponding electric conductors, the wiring on the side of the color film substrate is used as a signal line which is electrically connected with the pressure sensor and is used for detecting the pressure of the liquid crystal display panel pressed by the touch main body, so that the problem that the signal line electrically connected with the pressure sensor is wired by using the peripheral circuit area on the side of the array substrate of the liquid crystal display panel is avoided, the space of the peripheral circuit area of the liquid crystal display panel occupied by the signal line electrically connected with the pressure sensor is greatly reduced, and the realization of the narrow frame of the liquid crystal display panel is facilitated.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 1 is a schematic top view of an lcd panel according to an embodiment of the present invention, and fig. 2 is a schematic cross-sectional view along the direction AA' in fig. 1. Referring to fig. 1 and 2, the lcd panel includes a display area AA and a peripheral circuit area NAA surrounding the display area AA, the lcd panel includes an array substrate 1, a color filter substrate 2, a liquid crystal layer 3 disposed between the array substrate 1 and the color filter substrate 2, a plurality of conductive bodies 4 disposed between the array substrate 1 and the color filter substrate 2 and disposed in the peripheral circuit area NAA, a plurality of first conductive leads 51 disposed on a side of the color filter substrate 2 adjacent to the liquid crystal layer 3, and a plurality of pressure sensors 6 disposed on a side of the array substrate 1 adjacent to the liquid crystal layer 3, each pressure sensor 6 includes a first power signal input terminal a1, a second power signal input terminal a2, a first sensing signal output terminal b1, and a second sensing signal output terminal b2, at least one of the first power signal input terminal a1, the second power signal input terminal a2, the first sensing signal output terminal b1 and the second sensing signal output terminal b2 is electrically connected to the first conductive leads 51 one by one through the corresponding electrical conductor 4.
For example, fig. 1 only exemplarily shows two pressure sensors 6 located in the peripheral circuit area NAA on one side of the display area AA, and does not limit the number of pressure sensors in the liquid crystal display panel according to the embodiment of the present invention. In addition, the dashed area BB in fig. 1 corresponds to a driving module (not shown) on the array substrate 1, that is, the vertical projection of the dashed area on the array substrate covers the vertical projection of the driving module on the array substrate, and the driving module can input a bias voltage to the first power signal input terminal and the second power signal input terminal of the pressure sensor and detect the pressure detection signals output by the first sensing signal output terminal and the second sensing signal output terminal of the pressure sensor.
With reference to fig. 1 and 2, the pressure sensor 6 and the first conductive lead 51 may be exemplarily disposed in the peripheral circuit area NAA of the liquid crystal display panel to prevent the disposition of the pressure sensor 6 from affecting the light transmittance of the liquid crystal display panel. Fig. 1 exemplarily shows that the first power signal input terminal a1, the second power signal input terminal a2, the first sensing signal output terminal b1, and the second sensing signal output terminal b2 of the pressure sensor 61 are all electrically connected to the first conductive leads 51 one by one through the corresponding electrical conductors 4, the first conductive leads 51 can be wired to the dotted area BB by using the peripheral circuit area NAA and electrically connected to the driving module on the array substrate 1 by punching, and the driving module can transmit signals to the corresponding signal terminals of the pressure sensor 6 through the corresponding first conductive leads 51 and the electrical conductors 4.
With reference to fig. 1 and fig. 2, the first power signal input terminal a1, the second power signal input terminal a2, the first sensing signal output terminal b1, and the second sensing signal output terminal b2 of the pressure sensor 62 may be electrically connected to the driving module by using the signal line 53 on the side of the array substrate 1, and for example, the signal line 53 and the pressure sensor 6 may be made of the same material and in the same layer, that is, the signal line 53 is routed on the side of the array substrate 1.
Specifically, with reference to fig. 1 and fig. 2, the minimum pitch between the traces of the peripheral circuit area NAA can be set to d. If the signal lines electrically connected to the first power signal input terminal a1, the second power signal input terminal a2, the first sensing signal output terminal b1 and the second sensing signal output terminal b2 of the pressure sensor 61 and the pressure sensor 62 are all routed through a certain film layer on the side of the array substrate 1 close to the liquid crystal layer 3, a total of eight signal lines electrically connected to the pressure sensor 61 and the pressure sensor 62 are located on a certain film layer on the side of the array substrate 1 close to the liquid crystal layer 3, and the signal lines occupy the width of the peripheral circuit area NAA of 7 d.
In the embodiment of the present invention, the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1, and the second sensing signal output end b2 of the pressure sensor 61 are all electrically connected to the first conductive lead 51 on the side of the color filter substrate 2 adjacent to the liquid crystal layer 3 by the conductive body 4 located between the array substrate 1 and the color filter substrate 2, the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1, and the second sensing signal output end b2 of the pressure sensor 62 are all wired by the film layer on the side of the array substrate 1 adjacent to the liquid crystal layer 3, namely, the pressure sensor 61 is arranged to be routed to the dotted area BB through the signal line on the side of the color film substrate 2 close to the liquid crystal layer 3, and the pressure sensor 62 is arranged to be routed to the dotted area BB through the signal line on the side of the array substrate 1 close to the liquid crystal layer 3. For example, the vertical projection of the first conductive lead 51 electrically connected to the pressure sensor 61 on the array substrate 1 may be arranged to correspondingly cover the vertical projection of the signal line 53 electrically connected to the pressure sensor 62 on the array substrate 1. Thus, the pressure sensor 61 is wired to the dotted area BB through four signal lines on the side of the color film substrate 2 close to the liquid crystal layer 3, the pressure sensor 62 is wired to the dotted area BB through four signal lines on the side of the array substrate 1 close to the liquid crystal layer 3, that is, the pressure sensor 61 and the pressure sensor 62 are wired to the dotted area BB through two different film layers, and the vertical projections of the eight signal lines on the array substrate 1 of the two different film layers are correspondingly overlapped in pairs, so that the eight signal lines (the four first conductive leads 51 and the four signal lines 53 electrically connected to the pressure sensor 62) electrically connected to the pressure sensor 61 and the pressure sensor 62 occupy the minimum width of 3d in the peripheral circuit area NAA of the liquid crystal display panel, and the signal lines occupy the width of 7d in the peripheral circuit area when the eight signal lines are all disposed on one film layer on the side of the array substrate 1 close to the liquid crystal layer 3, the width of the peripheral circuit area NAA of the liquid crystal display panel occupied by the signal lines electrically connected with the pressure sensor 6 is greatly reduced, along with the increase of the number of the pressure sensors 6 in the liquid crystal display panel, at least one of the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1 and the second sensing signal output end b2 of the pressure sensor 6 is arranged to be electrically connected with the first conductive leads 51 positioned on one side of the color film substrate 2 close to the liquid crystal layer 3 through the corresponding electric conductors 4 one by one, the width of the peripheral circuit area NAA of the liquid crystal display panel occupied by the signal lines electrically connected with the pressure sensor 6 can be further reduced, and the realization of the narrow frame of the liquid crystal display panel is facilitated.
It should be noted that fig. 1 shows the signal lines 53 electrically connected to the pressure sensors 62 by dashed lines, and the signal lines 53 are arranged to be staggered with the corresponding first conductive leads 51 only for clearly showing the signal lines electrically connected to the pressure sensors 61 and the pressure sensors 62, and the signal lines 53 in fig. 1 should be arranged to overlap with the corresponding first conductive leads 51.
It should be noted that fig. 1 is only exemplary to arrange that the first power signal input terminal a1, the second power signal input terminal a2, the first sensing signal output terminal b1 and the second sensing signal output terminal b2 of the pressure sensor 61 are all electrically connected to the first conductive lead 51 through the corresponding electrical conductor 4, and as long as at least one of the first power signal input terminal a1, the second power signal input terminal a2, the first sensing signal output terminal b1 and the second sensing signal output terminal b2 of the pressure sensor 6 is electrically connected to the first conductive lead 51 through the corresponding electrical conductor 4, the signal lines electrically connected to the pressure sensor 6 can occupy the width of the peripheral circuit area NAA of the liquid crystal display panel, which is not limited in the embodiment of the present invention. In addition, fig. 1 only exemplarily shows that only the signal ends of the pressure sensors 61 are electrically connected to the first conductive leads one by one through the corresponding conductors, and the pressure sensors 61 and the pressure sensors 62 may also be provided with signal ends electrically connected to the first conductive leads 51 one by one through the corresponding conductors 4, and the embodiment of the present invention is not limited to which signal end of the pressure sensor 6 is electrically connected to the first conductive lead 51 one by one through the corresponding conductor 4.
Optionally, with reference to fig. 1 and fig. 2, the liquid crystal display panel may further include a sealant structure 7 and a plurality of second conductive leads 52, the sealant structure 7 is located in the peripheral circuit area NAA and is disposed around the display area AA, the sealant structure 7 is used for bonding the array substrate 1 and the color filter substrate 2 to form a closed structure, so as to prevent liquid crystal molecules in the liquid crystal layer 3 from entering the outside of the panel, the conductive body 4 is located in the sealant structure 7, and the conductive body 4 may be, for example, a gold ball structure located in the sealant structure 7. The second conductive lead 52 is located on one side of the array substrate 1 adjacent to the liquid crystal layer 3, at least one of the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1 and the second sensing signal output end b2 is electrically connected to the corresponding conductor 4 through the second conductive lead 52, and the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1 or the second sensing signal output end b2 electrically connected to the conductor 4 are electrically connected to the second conductive lead 52 one by one, and a vertical projection of the sealant structure 7 on the array substrate 1 does not overlap a vertical projection of the pressure sensor 6 on the array substrate 1.
The first power signal input a1, the second power signal input a2, the first sensing signal output b1 and the second sensing signal output b2 of the pressure sensor 61 are illustratively arranged in figure 1 to be electrically connected to the corresponding electrical conductor 4 by a second electrically conductive lead 52, namely, the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1 and the second sensing signal output end b2 of the pressure sensor 61 are all electrically connected with the first conductive lead 51 on the side of the color filter substrate 2 adjacent to the liquid crystal layer 3 through the corresponding second conductive lead 52 and the corresponding conductive body 4, and the first power signal input terminal a1, the second power signal input terminal a2, the first sensing signal output terminal b1 and the second sensing signal output terminal b2 are electrically connected to the second conductive leads 52 one by one, which effectively reduces the width of the signal line electrically connected to the pressure sensor 6 occupying the peripheral circuit area NAA of the liquid crystal display panel.
If the sealant structure 7 located in the peripheral circuit area NAA and surrounding the display area AA covers the pressure sensor 6 also located in the peripheral circuit area NAA, when the touch main body presses the liquid crystal display panel, since the sealant structure 7 is a jelly, the sealant structure 7 covering the pressure sensor 6 has a certain offset effect on the pressure applied by the touch main body, so that the pressure sensed by the pressure sensor 6 is not the actual pressure of the touch main body pressing the liquid crystal display panel, which affects the accuracy of pressure detection performed by the pressure sensor 6. According to the embodiment of the invention, the vertical projection of the frame glue structure 7 on the array substrate 1 is not overlapped with the vertical projection of the pressure sensor 6 on the array substrate 1, so that the influence of the frame glue structure 7 on the pressure detection process of the pressure sensor 6 is effectively avoided, and the accuracy of the pressure detection of the pressure sensor 6 in the liquid crystal display panel is improved. In addition, because the electric conductors 4 are located in the sealant structure 7, the second conductive leads 52 located on the side of the array substrate 1 close to the liquid crystal layer 3 are provided to electrically connect the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1, and the second sensing signal output end b2 of the pressure sensor 6 with the corresponding electric conductors 4, so as to ensure the pressure detection function of the liquid crystal display panel.
Fig. 3 is a schematic top view of another lcd panel according to an embodiment of the present invention, and fig. 4 is a schematic cross-sectional view taken along direction CC' of fig. 3. With reference to fig. 3 and 4 (the color film substrate 2 is not shown in fig. 3), the liquid crystal display panel includes a sealant structure 7 located in the peripheral circuit area NAA, the sealant structure 7 is disposed around the display area AA, and the conductive body 4 is located in the sealant structure 7. At least one of the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1 and the second sensing signal output end b2 is directly and electrically connected with the first conductive leads 51 one by one through the corresponding electrical conductor 4, and the vertical projection of the pressure sensor 6 on the array substrate 1 and the vertical projection of the sealant structure 7 on the array substrate 1 at least partially overlap.
Specifically, with reference to fig. 3 and 4, since the vertical projection of the pressure sensor 6 on the array substrate 1 and the vertical projection of the sealant structure 7 on the array substrate 1 at least partially overlap, that is, a part of the sealant structure 7 covers the pressure sensor 6, the signal terminal of the pressure sensor 61 can be exemplarily set to be electrically connected to the first conductive lead 51 one by one directly through the corresponding conductor 4 in the part of the sealant structure 7 covering the pressure sensor 6. For example, the first power signal input terminal a1, the second power signal input terminal a2, the first sensing signal output terminal b1 and the second sensing signal output terminal b2 of the pressure sensor 61 may be electrically connected to the first conductive lead 51 on the side of the color filter substrate 2 adjacent to the liquid crystal layer 3 directly through the electrical conductor 4, so as to reduce the width of the signal line electrically connected to the pressure sensor occupying the peripheral circuit area NAA of the liquid crystal display panel.
Optionally, with reference to fig. 3 and fig. 4, the liquid crystal display panel may further include a plurality of annular retaining wall structures 8 located in the peripheral circuit area NAA, where the annular retaining wall structures 8 are in contact with the array substrate 1 and the color film substrate 2, and each annular retaining wall structure 8 is disposed corresponding to one pressure sensor 6. Fig. 5 is a schematic structural diagram of an annular retaining wall structure according to an embodiment of the present invention, and with reference to fig. 3, fig. 4 and fig. 5, a surrounding area of an inner edge 81 of the annular retaining wall structure 8 is a first area a1, a side of an outer edge 82 of the annular retaining wall structure 8, which is away from the inner edge 81 of the annular retaining wall structure 8, is a second area a2, the annular retaining wall structure 8 is used to block the sealant structure 7 of the second area a2 from entering the first area a1, and the first power signal input terminal a1, the second power signal input terminal a2, the first sensing signal output terminal b1 or the second sensing signal output terminal b2 electrically connected to the electrical conductor 4 are located in the second area a 2.
Specifically, when the frame adhesive structure 7 located in the peripheral circuit area NAA and arranged around the display area AA covers the pressure sensor 6 also located in the peripheral circuit area NAA, the frame adhesive structure 7 covering the pressure sensor 6 has a certain counteracting effect on the pressure applied by the touch main body, which affects the accuracy of pressure detection performed by the pressure sensor 6, and the larger the area of the frame adhesive structure 7 covering the pressure sensor 6 is, the larger the influence of the frame adhesive structure 7 on the pressure detection process performed by the pressure sensor 6 is. By the arrangement of the annular retaining wall structure 8 in contact with the array substrate 1 and the color filter substrate 2, and the annular retaining wall structure 8 can block the sealant structure 7 of the second region a2 from entering the first region a1, that is, there is no sealant structure 7 in the first region a1 of the annular retaining wall structure 8, that is, there is no sealant structure 7 in the first region a1 to cover the pressure sensor 6, and the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1 or the second sensing signal output end b2 electrically connected to the electrical conductor 4 are located in the second region a2, here, the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1 or the second sensing signal output of the pressure sensor 61 are exemplarily arranged to be electrically connected to the first electrical lead 51 through the corresponding electrical conductor 4, and then the first power signal input end a1, the second power signal input end a 36, The second power signal input end a2, the first sensing signal output end b1 or the second sensing signal output end is located in the second area a2, and the electric conductor 4 in the sealant structure 7 in the second area a2 is used for realizing the electric connection with the first conductive lead 51, so that the width of the liquid crystal display panel occupied by the signal line electrically connected with the pressure sensor 6 is reduced while the pressure detection function of the liquid crystal display panel is realized, and the influence of the sealant structure 7 on the pressure detection process of the pressure sensor 6 is reduced to the greatest extent.
Optionally, the liquid crystal display panel may further include a plurality of common electrodes 9 and a plurality of common electrode signal lines 91, each common electrode 9 is electrically connected to at least one common electrode signal line 91, here, each common electrode 9 is exemplarily set to be electrically connected to one common electrode signal line 91, the common electrodes 9 and the common electrode signal lines 91 are located on one side of the color filter substrate 2 adjacent to the liquid crystal layer 3, the first conductive lead 51 and the common electrode 9 may be made of the same material in the same layer, that is, the first conductive lead 51 and the common electrode 9 may be located in the same film layer. By arranging the first conductive lead 51 and the common electrode 9 to be located on the same layer, at least one of the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1 and the second sensing signal output end of the pressure sensor 6 is electrically connected with the first conductive lead 51 through the corresponding electric conductor 4 one by one, so that the signal wire electrically connected with the pressure sensor 6 is reduced to occupy the width of the peripheral circuit area NAA of the liquid crystal display panel, meanwhile, the situation that the first conductive lead layer is independently arranged for wiring the first conductive lead is avoided, the thickness of the liquid crystal display panel is reduced, and the thinning of the liquid crystal display panel is facilitated.
Alternatively, the common electrode 9 may be multiplexed as a touch electrode, and the corresponding common electrode signal line 91 is electrically connected to the driving module through a through hole in the dashed line area BB in fig. 1. With reference to fig. 1 and fig. 2, the common electrode 9 can be multiplexed into a self-contained touch electrode 101, the liquid crystal display panel performs display and touch position detection in a time-sharing manner, when performing display, the driving module transmits a common electrode signal to the common electrode 9 through a common electrode signal line 91, liquid crystal molecules of the liquid crystal layer 3 deflect under the action of the common electrode signal on the common electrode 9 and a pixel electrode signal on a pixel electrode (not shown), and the liquid crystal display panel achieves a display function. When the touch position is detected, the driving module does not transmit a common electrode signal to the common electrode 9 any more, at this time, the common electrode 9 is multiplexed as a self-contained touch electrode 101, the common electrode signal line 91 is multiplexed as a self-contained touch electrode signal line 102, the driving module transmits a touch signal to the corresponding self-contained touch electrode 101 through the self-contained touch electrode signal line 102, the self-contained touch electrode 101 forms a capacitor with the ground, and the touch position can be detected by detecting the capacitance fed back from the self-contained touch electrode 101. Similarly, the first conductive lead 51 and the self-contained touch electrode 101 may be made of the same material in the same layer, so that the signal line electrically connected to the pressure sensor 6 occupies the width of the peripheral circuit area NAA of the liquid crystal display panel, and the first conductive lead layer is not separately arranged, so that the thickness of the liquid crystal display panel is reduced, and the liquid crystal display panel is thinned.
Fig. 6 is a schematic top view of another lcd panel according to an embodiment of the present invention, and fig. 7 is a schematic cross-sectional view taken along direction DD' of fig. 6. Unlike the lcd panel with the structure shown in fig. 1 and 2, the lcd panel includes the mutual capacitance touch driving electrodes 104 and the mutual capacitance touch sensing electrodes 103, and the common electrodes 9 can be reused as the mutual capacitance touch driving electrodes or the mutual capacitance touch sensing electrodes, fig. 6 and 7 exemplarily set the mutual capacitance touch driving electrodes 104 at a side of the array substrate 1 adjacent to the liquid crystal layer 3, and the mutual capacitance touch sensing electrodes 103 at a side of the color film substrate 2 adjacent to the liquid crystal layer 3, and the common electrodes 9 can be reused as the mutual capacitance touch sensing electrodes 103. The liquid crystal display panel performs display and touch position detection in a time-sharing manner, when the liquid crystal display panel performs display, the driving module transmits a common electrode signal to the common electrode 9 through the common electrode signal line 91, liquid crystal molecules of the liquid crystal layer 3 deflect under the action of the common electrode signal on the common electrode 9 and a pixel electrode signal on a pixel electrode (not shown), and the liquid crystal display panel achieves a display function. When the touch position is detected, the driving module does not transmit a common electrode signal to the common electrode 9 any more, at this time, the common electrode 9 is reused as the mutual capacitance type touch sensing electrode 103, the common electrode signal line 91 is reused as the mutual capacitance type touch sensing electrode signal line 105, the driving module sequentially inputs touch driving signals to the mutual capacitance type touch driving electrode 104 through the mutual capacitance type touch driving electrode signal line 106, the mutual capacitance type touch sensing electrode 103 outputs touch sensing signals through the mutual capacitance type touch sensing electrode signal line 105, so that the capacitance values of the intersection points of all the mutual capacitance type touch driving electrodes 104 and the mutual capacitance type touch sensing electrode 103, that is, the capacitance value of the whole two-dimensional plane can be obtained, the coordinates of the touch points can be calculated according to the capacitance variation data of the two-dimensional plane, and the touch position detection function of the liquid crystal display panel is realized.
For example, as shown in fig. 7, the first conductive leads 51 and the mutual capacitance touch sensing electrodes 103 may be formed by the same material layer. The mutual capacitance type touch sensing electrode may also be disposed on one side of the array substrate close to the liquid crystal layer, and the mutual capacitance type touch driving electrode is disposed on one side of the color film substrate close to the liquid crystal layer, so that the first conductive lead and the mutual capacitance type touch driving electrode may be formed on the same layer of the same material, which is not limited in the embodiment of the present invention.
Optionally, the liquid crystal display panel may further include a plurality of thin film transistors located on one side of the array substrate adjacent to the liquid crystal layer, and the pressure sensor and an active layer, a source drain, or a gate of the thin film transistor may be located on the same film layer. Fig. 8 is a schematic cross-sectional structure diagram of another liquid crystal display panel according to an embodiment of the present invention, as shown in fig. 8, a gate 301 of a thin film transistor 30 is electrically connected to a corresponding scanning signal line (not shown), a source 303 of the thin film transistor is electrically connected to a corresponding data signal line (not shown), a drain 304 of the thin film transistor is electrically connected to a corresponding pixel electrode 41, the thin film transistor 30 controls the source 303 and the drain 304 of the thin film transistor to be turned on under the action of the scanning signal line input by the scanning signal line, the data signal line inputs a data signal to the pixel electrode 41 through the turned-on source 303 and drain 304, liquid crystal molecules (not shown) are deflected under the action of a data signal on the pixel electrode 41 and a common electrode signal on the common electrode 9, and the liquid crystal display panel. Fig. 8 exemplarily illustrates that the pressure sensor 6 is fabricated in the same layer as the active layer 302 of the tft 30, so as to simplify the fabrication process of the liquid crystal display panel.
Fig. 9 is a schematic structural diagram of a pressure sensor according to an embodiment of the present invention. As shown in fig. 9, the pressure sensor 6 further includes a first sense resistor R1A second sensing resistor R2A third sensing resistor R3And a fourth sense resistor R4First sense resistor R1First end m1 and fourth sensing resistor R4A first terminal m4 electrically connected to the first power signal input terminal a1, a first sense resistor R1Second terminal n1 and second sensing resistor R2The first end m2 is electrically connected with the first sensing signal output end b1, and the fourth sensing resistor R4Second terminal n4 and third sense resistor R3The first end m3 is electrically connected with the second sensing signal output end b2, and the second sensing resistor R2Second terminal n2 and third sense resistor R3And the second terminal n3 is electrically connected to the second power signal input terminal a 2. For example, the voltage input by the first power signal input terminal a1 may be a positive voltage, and the voltage input by the second power signal input terminal a2 may be a negative voltage, or may be a zero voltage, for example, the second power signal input terminal a2 may be grounded.
Specifically, when there is a certain difference between the voltages at the first power signal input terminal a1 and the second power signal input terminal a2, that is, when the first power signal input terminal a1 and the second power signal input terminal a2 input bias voltage to the pressure sensor 6, current flows through each branch in the bridge circuit formed by the four sense resistors. First induction resistor R1A second sensing resistor R2A third sensing resistor R3And a fourth sense resistor R4Not satisfying the bridge balance condition
At this time, the potentials of the first sensing signal output end b1 and the second sensing signal output end b2 are not equal, and the pressure applied to the pressure sensor 6 can be detected according to the pressure detection signals output by the first sensing signal output end b1 and the second sensing signal output end b 2.
Fig. 10 is a schematic structural diagram of another pressure sensor according to an embodiment of the present invention. As shown in FIG. 10, the first sensing resistor R is based on the structure of the pressure sensor shown in FIG. 91A component of an extension length from the first end m1 to the second end n1 in the first extending direction 100 is larger than a component in the second extending direction 200, and the second sensing resistor R2The component of the extending length from the first end m2 to the second end n2 in the second extending direction 200 is larger than the component in the first extending direction 100, and the third sensing resistor R3A component of an extension length from the first end m3 to the second end n3 in the first extending direction 100 is larger than a component in the second extending direction 200, and a fourth sense resistor R4A component of an extension length from the first end m4 to the second end n4 in the second extending direction 200 is larger than a component in the first extending direction 100, and the first extending direction 100 and the second extending direction 200 are arranged to intersect.
In particular, the pressure sensor of the structure shown in fig. 10 generally requires the first sensing resistor R1A second sensing resistor R2A third sensing resistor R3And a fourth sense resistor R4The deformation experienced being different, e.g. the first sense resistor R1And a third sense resistor R3Sense compression deformation, second sense resistor R2And a fourth sense resistor sensing R4Tensile deformation, therefore, the first sense resistance R1A second sensing resistor R2A third sensing resistor R3And a fourth sense resistor R4Spatially separated, such that the first sense resistor R is caused to change when the local temperature changes1A second sensing resistor R2A third sensing resistor R3And a fourth sense resistor R4In different temperature environments, the temperature is opposite to the first induction resistor R1A second sensing resistor R2A third sensing resistor R3And a fourth sense resistor R4Different influences are generated to influence the accuracy of the pressure detection of the pressure sensor 6. In contrast to the pressure sensor of fig. 9, the pressure sensor of fig. 10 is configured by providing the first sensing resistor R1And a third sense resistor R3Sensing strain in the first extension direction 100, and a second sensing resistor R2And a fourth sense resistor R4Inducing strain in the second extending direction 200 to make the first sensing resistor R1A second sensing resistor R2And a third sense resistor R3And a fourth sense resistor R4Can be distributed at the same place in space or in a smaller area, so that the first sensing resistor R is further enabled to be1A second sensing resistor R2A third sensing resistor R3And a fourth sense resistor R4The synchronous temperature change eliminates the influence of temperature difference and improves the accuracy of pressure induction of the liquid crystal display panel.
Fig. 11 is a schematic structural diagram of another pressure sensor according to an embodiment of the present invention. As shown in fig. 11, the pressure sensor 6 may be a block-shaped, made of a semiconductor material, and have a polygonal shape including at least four sides, and for example, the pressure sensor 6 may have a quadrangular shape. The first side 261 and the second side 262 of the pressure sensor 6 are disposed oppositely, the third side 263 and the fourth side 264 are disposed oppositely, the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1 and the second sensing signal output end b2 are respectively disposed on four sides of the polygon, the sides of the first power signal input end a1 and the second power signal input end a2 are not connected, and the sides of the first sensing signal output end b1 and the second sensing signal output end b2 are not connected.
Specifically, the first power signal input terminal a1 and the second power signal input terminal a2 may apply a bias voltage to the pressure sensor 6 through the first side 261 and the second side 262 of the pressure sensor 6, when there is a pressure pressing the touch display panel, the resistance of the strain resistor 265 of the pressure sensor 6 changes, and the corresponding strain voltage output by the first sensing signal output terminal b1 and the second sensing signal output terminal b2 changes accordingly, so that the pressure applied to the pressure sensor 6 can be detected by detecting the change of the voltage on the strain resistor 265.
It should be noted that the drawings of the embodiments of the present invention only show the sizes of the elements by way of example, and do not represent the actual sizes of the elements in the display panel.
In the embodiment of the invention, the electric conductor 4 is arranged between the array substrate 1 and the color film substrate 2 of the liquid crystal display panel, the first electric lead 51 is arranged at one side of the color film substrate 2 close to the liquid crystal layer 3, and at least one of the first power signal input end a1, the second power signal input end a2, the first sensing signal output end b1 and the second sensing signal output end b2 of the pressure sensor 6 is electrically connected with the first electric lead 51 one by one through the corresponding electric conductor 4, namely, the routing at the side of the color film substrate 2 is used as the signal line which is electrically connected with the pressure sensor 6 and is used for detecting the pressure of the liquid crystal display panel pressed by the touch body, thereby avoiding that the signal lines electrically connected with the pressure sensor 6 are all carried out by utilizing the peripheral circuit area NAA at the side of the array substrate 1 of the liquid crystal display panel, greatly reducing the space of the routing NAA at the periphery of the liquid crystal display panel, the realization of the narrow frame of the liquid crystal display panel is facilitated.
Fig. 12 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present invention. As shown in fig. 12, the liquid crystal display device 28 includes the liquid crystal display panel 27 in the above embodiment, and therefore the liquid crystal display device 28 provided in the embodiment of the present invention also has the beneficial effects described in the above embodiment, which are not described again here. The liquid crystal display device 28 may be an electronic display device such as a mobile phone, a computer, or a television.
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 illustrated 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 (11)
1. A liquid crystal display panel including a display region and a peripheral circuit region surrounding the display region, comprising:
the liquid crystal display panel comprises an array substrate, a color film substrate and a liquid crystal layer positioned between the array substrate and the color film substrate;
a plurality of conductors positioned between the array substrate and the color film substrate, wherein the conductors are positioned in the peripheral circuit region;
the first conductive leads are positioned on one side, close to the liquid crystal layer, of the color film substrate;
the array substrate comprises a liquid crystal layer, a plurality of pressure sensors and a plurality of first conductive leads, wherein the liquid crystal layer is arranged on the array substrate, the plurality of pressure sensors are positioned on one side, close to the liquid crystal layer, of the array substrate, each pressure sensor comprises a first power supply signal input end, a second power supply signal input end, a first sensing signal output end and a second sensing signal output end, and at least one of the first power supply signal input end, the second power supply signal input end, the first sensing signal output end and the second sensing signal output end is electrically connected with the first conductive leads one by one through the corresponding;
further comprising:
the frame glue structure is positioned in the peripheral circuit area and arranged around the display area; the electric conductor is positioned in the frame glue structure;
at least one of the first power signal input end, the second power signal input end, the first sensing signal output end and the second sensing signal output end is directly and electrically connected with the first conductive lead one by one through the corresponding conductor;
the vertical projection of the pressure sensor on the array substrate is at least partially overlapped with the vertical projection of the frame glue structure on the array substrate;
the annular retaining wall structures are positioned in the peripheral circuit area and are in contact with the array substrate and the color film substrate;
each annular retaining wall structure is arranged corresponding to one pressure sensor, the surrounding area of the inner edge of each annular retaining wall structure is a first area, one side, far away from the inner edge of each annular retaining wall structure, of the outer edge of each annular retaining wall structure is a second area, and each annular retaining wall structure is used for blocking the frame adhesive structure of each second area from entering the first area;
the first power supply signal input terminal, the second power supply signal input terminal, the first sensing signal output terminal or the second sensing signal output terminal electrically connected to the electrical conductor are located in the second region;
the vertical projection of the first area on the array substrate is positioned in the vertical projection of the pressure sensor on the array substrate.
2. The liquid crystal display panel according to claim 1, further comprising:
each common electrode is electrically connected with at least one common electrode signal line, and the common electrodes and the common electrode signal lines are positioned on one side of the color film substrate close to the liquid crystal layer;
the first conductive lead and the common electrode are made of the same material in the same layer.
3. The liquid crystal display panel according to claim 2, wherein the common electrode is multiplexed as a touch electrode.
4. The LCD panel of claim 3, wherein the touch electrodes are self-capacitance touch electrodes or mutual capacitance touch driving electrodes or mutual capacitance touch sensing electrodes.
5. The liquid crystal display panel according to claim 1, wherein the first conductive lead and the pressure sensor are located in the peripheral circuit region.
6. The liquid crystal display panel according to claim 1, further comprising:
and the pressure sensor and an active layer, a source drain electrode or a grid electrode of the thin film transistor are positioned on the same film layer.
7. The liquid crystal display panel according to claim 1, wherein the pressure sensor further comprises:
the device comprises a first induction resistor, a second induction resistor, a third induction resistor and a fourth induction resistor;
the first end of the first sensing resistor and the first end of the fourth sensing resistor are electrically connected with the first power signal input end, the second end of the first sensing resistor and the first end of the second sensing resistor are electrically connected with the first sensing signal output end, the second end of the fourth sensing resistor and the first end of the third sensing resistor are electrically connected with the second sensing signal output end, and the second end of the second sensing resistor and the second end of the third sensing resistor are electrically connected with the second power signal input end.
8. The liquid crystal display panel according to claim 7, wherein a component of an extension length of the first sense resistance from the first end to the second end in the first extending direction is larger than a component in the second extending direction, a component of an extension length of the second sense resistance from the first end to the second end in the second extending direction is larger than a component in the first extending direction, a component of an extension length of the third sense resistance from the first end to the second end in the first extending direction is larger than a component in the second extending direction, and a component of an extension length of the fourth sense resistance from the first end to the second end in the second extending direction is larger than a component in the first extending direction; wherein the first extending direction and the second extending direction are arranged crosswise.
9. The liquid crystal display panel according to claim 1, wherein the pressure sensor is in a block shape, made of a semiconductor material, and shaped as a polygon including at least four sides;
the first power signal input end, the second power signal input end, the first sensing signal output end and the second sensing signal output end are respectively arranged on four edges of the polygon, the edges where the first power signal input end and the second power signal input end are located are not connected, and the edges where the first sensing signal output end and the second sensing signal output end are located are not connected.
10. The liquid crystal display panel according to claim 1, wherein the conductor has a gold ball structure.
11. A liquid crystal display device comprising the liquid crystal display panel according to any one of claims 1 to 10.
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| CN108766327B (en) * | 2018-05-14 | 2021-05-04 | 厦门天马微电子有限公司 | Display panel and display device |
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| CN105629593B (en) * | 2016-03-30 | 2019-08-02 | 京东方科技集团股份有限公司 | A kind of panel |
| CN106681061A (en) * | 2017-03-17 | 2017-05-17 | 武汉华星光电技术有限公司 | Liquid crystal display panel, preparation method thereof and liquid crystal display device |
| CN106990620B (en) * | 2017-04-11 | 2019-11-22 | 厦门天马微电子有限公司 | A kind of display panel |
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| CN107102466B (en) * | 2017-06-30 | 2020-01-21 | 上海天马微电子有限公司 | Display panel and touch display device |
| CN107193149A (en) * | 2017-07-27 | 2017-09-22 | 上海天马微电子有限公司 | A kind of touch-control display panel and touch control display apparatus |
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