CN113009742A - Display device with switchable visual angle - Google Patents
Display device with switchable visual angle Download PDFInfo
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- CN113009742A CN113009742A CN202110216838.4A CN202110216838A CN113009742A CN 113009742 A CN113009742 A CN 113009742A CN 202110216838 A CN202110216838 A CN 202110216838A CN 113009742 A CN113009742 A CN 113009742A
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- 230000000007 visual effect Effects 0.000 title abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 98
- 239000000758 substrate Substances 0.000 claims abstract description 88
- 210000002858 crystal cell Anatomy 0.000 claims abstract description 47
- 210000004027 cell Anatomy 0.000 claims description 33
- 239000002184 metal Substances 0.000 claims description 12
- 239000010409 thin film Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000011521 glass Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 239000010408 film Substances 0.000 description 7
- 230000009977 dual effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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Classifications
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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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
-
- 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
- G02F1/133345—Insulating layers
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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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
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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
- G02F1/136—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
Abstract
A display device with switchable visual angles comprises a display panel, a flexible circuit board and a printed circuit board, wherein the flexible circuit board is bound between the display panel and the printed circuit board, the display panel comprises a first liquid crystal box and a second liquid crystal box, the first liquid crystal box and the second liquid crystal box are arranged in a vertically stacked mode, and the flexible circuit board comprises a first flexible circuit board and at least one second flexible circuit board; the first liquid crystal cell comprises a first driving line, and the second liquid crystal cell comprises a second driving line; a through hole is formed between the first liquid crystal box and the second liquid crystal box; the first driving circuit and the second driving circuit are integrated on the same glass substrate or the same thin film transistor through the through hole and are connected to the printed circuit board through the same flexible circuit board, so that the number of the flexible circuit boards can be saved, and the manufacturing cost of the display device is reduced.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display device with switchable viewing angles.
Background
In the liquid crystal display device and the driving method thereof in the prior art, the display in multiple modes of wide visual angle, left and right narrow visual angle, up and down narrow visual angle and full narrow visual angle can be realized by arranging the double dimming boxes, the penetration rate and the contrast ratio of the front view are not influenced in the narrow visual angle mode, and the display effect is good. In addition, the display panel between the two dimming boxes can be matched with various display modes, for example, the dual dimmers with orthogonal alignment directions are respectively positioned at two sides of the display panel, so that the display panel and the display panel form a complementary visual angle, a compensation film is replaced, the color cast can be improved, and the like, and therefore, the display device with the dual dimming boxes is widely applied.
A display device generally includes a display panel and a Printed Circuit Board (PCB), and a Flexible Printed Circuit (FPC) is bonded to the PCB and the display panel, respectively. Fig. 1 is a layered schematic diagram of a display device with dual dimming cells in the prior art, and as shown in fig. 1, the display device with dual dimming cells includes a first dimming cell 10, a second dimming cell 20, a display liquid crystal cell 30, and a printed circuit board 300, wherein the first dimming cell 10 is connected to a first flexible circuit board 210a, and the second dimming cell 20 is connected to a second flexible circuit board 210 b. One end of the first flexible circuit board 210a is connected to the first dimming box 10, and the other end is connected to the first FPC interface 320a on the printed circuit board 300; the second flexible circuit board 210b has one end connected to the second dimming cell 20 and the other end connected to the second FPC interface 320b on the printed circuit board 300. That is to say, in the prior art, two light modulation boxes need two FPCs to be connected with the PCB twice, which not only increases the connection energy consumption, but also increases the manufacturing cost of the display device due to the large number of FPCs.
Therefore, there is a need to provide an improved technical solution to overcome the above technical problems in the prior art.
Disclosure of Invention
The invention aims to provide a display device with switchable viewing angles, which aims to solve the problem that in the prior art, two liquid crystal boxes are respectively connected with a PCB (printed circuit board) by two FPCs (flexible printed circuits), so that the manufacturing cost of the display device is high.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
The display device with switchable viewing angles comprises a display panel, a flexible circuit board and a printed circuit board, wherein the flexible circuit board is bound between the display panel and the printed circuit board;
the flexible circuit board comprises a first flexible circuit board and at least one second flexible circuit board;
the first liquid crystal cell includes a first drive line, and the second liquid crystal cell includes a second drive line;
a through hole is formed between the first liquid crystal box and the second liquid crystal box;
the first driving circuit and the second driving circuit are connected to the same first flexible circuit board or the same second flexible circuit board through the through hole.
Further, the first liquid crystal cell is a first dimming cell, the second liquid crystal cell is a second dimming cell, the first dimming cell includes a first substrate, a second substrate disposed opposite to the first substrate, and a first liquid crystal layer disposed between the first substrate and the second substrate, and the second dimming cell includes a third substrate disposed opposite to the second substrate, and a second liquid crystal layer disposed between the second substrate and the third substrate.
Furthermore, the second substrate is provided with a first pixel electrode layer facing the first liquid crystal layer, the second substrate is provided with a wire grid polarizing plate, an insulating layer and a second pixel electrode layer facing the second liquid crystal layer in sequence, the first driving circuit is located in the first pixel electrode layer, and the second driving circuit is located in the second pixel electrode layer.
Furthermore, a first through hole is formed between the first dimming box and the second dimming box, the first through hole sequentially penetrates through the second substrate, the wire grid polarizing plate and the insulating layer, the first pixel electrode layer is connected with the second pixel electrode layer through the first through hole, and the first driving circuit is arranged in the same plane through the first through hole and the second driving circuit and connected to the first flexible circuit board.
Further, the first driving line and the second driving line are insulated from each other.
Furthermore, the display panel further comprises a display liquid crystal cell stacked with the first light modulation cell and the second light modulation cell, the display liquid crystal cell is located on one side of the first substrate far away from the first liquid crystal layer or on one side of the third substrate far away from the second liquid crystal layer, and a driving circuit of the display liquid crystal cell is connected to the printed circuit board through at least one second flexible circuit board lead.
Further, the first liquid crystal cell is a display liquid crystal cell, the second liquid crystal cell is a second light modulation cell, the display liquid crystal cell includes a color film substrate, an array substrate arranged opposite to the color film substrate, and a third liquid crystal layer located between the color film substrate and the array substrate, and the second light modulation cell includes a third substrate arranged opposite to the array substrate, and a second liquid crystal layer located between the third substrate and the array substrate.
Furthermore, the array substrate is provided with a wire grid polarizing plate, an insulating layer and a second pixel electrode layer in sequence towards the second liquid crystal layer side, and the second driving circuit is located on the second pixel electrode layer.
Further, the first driving circuit of the display liquid crystal box comprises a metal electrode, and the metal electrode is arranged on the array substrate and faces to the third liquid crystal layer side.
Furthermore, a second through hole is formed between the second dimming box and the display liquid crystal box and penetrates through the array substrate, the wire grid polarizing plate and the insulating layer in sequence, the second driving circuit is electrically connected with the metal electrode through the second through hole, and the first driving circuit where the metal electrode is located is connected to the printed circuit board through at least one second flexible circuit board lead.
According to the display device with switchable visual angles, the driving circuits of the two liquid crystal boxes are integrated on the same glass substrate or the same TFT through the through holes and are connected to the printed circuit board through the same FPC, so that the number of the FPCs can be saved, and the problem that in the prior art, the two liquid crystal boxes are respectively connected with the PCB through the two FPCs, and the manufacturing cost of the display device is high is solved.
Drawings
Fig. 1 is a layered schematic diagram of a display device with dual dimming boxes in the prior art.
Fig. 2 is a schematic view illustrating a structure of a display panel with switchable viewing angles according to a first embodiment of the present invention.
Fig. 3 is a schematic connection diagram of a view angle switchable apparatus according to a first embodiment of the invention.
Fig. 4 is a schematic diagram illustrating simulation of left and right light receiving of the first light adjusting box according to the first embodiment of the present invention.
Fig. 5 is a simulation diagram illustrating the light receiving of the second light adjusting box according to the first embodiment of the present invention.
Fig. 6 is a schematic view illustrating a structure of a display panel with switchable viewing angles according to a second embodiment of the present invention.
Fig. 7 is a schematic view illustrating a connection of a view angle switchable device according to a second embodiment of the present invention.
Fig. 8 is a partial schematic diagram of a first driving circuit according to a second embodiment of the invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and examples.
[ first embodiment ]
Fig. 2 is a schematic view illustrating a structure of a display panel with switchable viewing angles according to a first embodiment of the present invention, and fig. 3 is a schematic view illustrating a connection of a display panel with switchable viewing angles according to the first embodiment of the present invention, referring to fig. 2 and fig. 3, a display device with switchable viewing angles according to the present invention includes a display panel 100, a flexible circuit board 200 and a printed circuit board 300, wherein the flexible circuit board 200 is bound between the display panel 100 and the printed circuit board 300.
Specifically, the display panel 100 includes a first liquid crystal cell and a second liquid crystal cell, the first liquid crystal cell and the second liquid crystal cell are stacked up and down, the first liquid crystal cell is a first dimming cell 10, the second liquid crystal cell is a second dimming cell 20, the first dimming cell 10 includes a first substrate 11, a second substrate 14 disposed opposite to the first substrate 11, and a first liquid crystal layer 12 disposed between the first substrate 11 and the second substrate 14, and the second dimming cell 20 includes a third substrate 25 disposed opposite to the second substrate 14, and a second liquid crystal layer 24 disposed between the second substrate 14 and the third substrate 25.
Further, the second substrate 14 is provided with a first pixel electrode layer 13 facing the first liquid crystal layer 12, the second substrate 14 is provided with a wire grid polarizing plate 21, an insulating layer 22 and a second pixel electrode layer 23 in this order facing the second liquid crystal layer 24, the first driving line 410 is located on the first pixel electrode layer 13, and the second driving line 420 is located on the second pixel electrode layer 23.
Specifically, the flexible circuit board 200 includes a first flexible circuit board 210 and at least one second flexible circuit board 220.
In this embodiment, a first through hole 40 sequentially passing through the second substrate 14, the wire grid polarizing plate 21 and the insulating layer 22 is disposed between the first light modulation box 10 and the second light modulation box 20, and the first pixel electrode layer 13 and the second pixel electrode layer 23 are connected by the first through hole 40, which may be performed by performing laser drilling on the second substrate 14 in advance, then sequentially fabricating the wire grid polarizing plate 21 and the insulating layer 22 having through holes at positions corresponding to the positions where the second substrate 14 is drilled, and finally fabricating the first pixel electrode layer 13 and the second pixel electrode layer 23 connected to each other through the through holes at two sides of the second substrate 14, thereby fabricating a structure having through holes between the two light modulation boxes, and the detailed process is not repeated herein. In addition, in the present embodiment, the wire grid polarizer 21 is disposed in the second substrate 14, and can be used as the polarizer on the side of the first light modulation box 10 close to the second light modulation box 20 and the polarizer on the side of the second light modulation box 20 close to the first light modulation box 10, so that the first light modulation box 10 and the second light modulation box 20 can both adjust the wide and narrow viewing angles.
The first driving circuit 410 passes through the first through hole 40 to be disposed in the same plane as the second driving circuit 420, and is commonly connected to the first flexible circuit board 210, i.e. the driving circuits of the two dimming boxes are integrated in the first flexible circuit board 210 and connected to the FPC interface 320 on the printed circuit board 300. In other embodiments, the second driving circuit 420 may pass through the first through hole 40 to be disposed in the same plane as the first driving circuit 410. However, the first driving circuit 410 and the second driving circuit 420 are insulated from each other, that is, the two dimming boxes are still controlled by two different driving signals, in this embodiment, one of the dimming boxes is controlled by the driving board to perform vertical dimming, the other dimming box is controlled by left-right dimming, and the two dimming boxes can be independently switched to the wide viewing angle mode or the narrow viewing angle mode, so as to implement vertical, horizontal, and wide-narrow viewing angle switching of the display device.
In addition, the display panel 100 further includes a display liquid crystal cell 30 stacked with the first and second dimming cells 10 and 20, the display liquid crystal cell 30 is located on a side of the third substrate 25 away from the second liquid crystal layer 24, and driving lines of the display liquid crystal cell 30 are connected to the printed circuit board 300 through at least one second flexible circuit board 220 by means of leads, and are finally connected to a chip 310 on the printed circuit board 300. In other embodiments, the liquid crystal display cell 30 may also be disposed on a side of the first substrate 11 away from the first liquid crystal layer 12.
That is, the first flexible circuit board 210 is connected between the two dimming cells and the printed circuit board 300, and the at least one second flexible circuit board 220 is connected between the display liquid crystal cell 30 and the printed circuit board 300. Therefore, the driving circuit for controlling the dimming liquid crystal box with the upper, lower, left and right visual angles is integrated on the same flexible circuit board, the quantity of FPCs can be saved, and the manufacturing cost of the display device is reduced.
Fig. 4 is a simulation diagram illustrating left and right light receiving of the first light adjusting box according to the first embodiment of the present invention, and fig. 5 is a simulation diagram illustrating up and down light receiving of the second light adjusting box according to the first embodiment of the present invention. As can be seen from fig. 4 and 5, after the driving circuits of the two dimming boxes are integrated in the same FPC, the control of the respective driving signals on the first dimming box 10 and the second dimming box 20 is not affected, and the control effect of the two dimming boxes on the upper and lower viewing angles and the left and right viewing angles can still be achieved. The principle of controlling the viewing angle of a specific dual dimming box is not described in detail herein.
[ second embodiment ]
Fig. 6 is a schematic view illustrating a structure of a display panel switchable between viewing angles according to a second embodiment of the present invention, fig. 7 is a schematic view illustrating a connection of a device switchable between viewing angles according to the second embodiment of the present invention, and fig. 8 is a partial view illustrating a first driving circuit according to the second embodiment of the present invention, and referring to fig. 6 to fig. 8, the difference from the first embodiment is that a first liquid crystal cell in the present embodiment is a display liquid crystal cell 30, and a second liquid crystal cell is a second light modulation cell 20. The display liquid crystal cell 30 includes a color film substrate 33, an array substrate 31 disposed opposite to the color film substrate 33, and a third liquid crystal layer 32 disposed between the color film substrate 33 and the array substrate 31, where the array substrate 31 is defined by a plurality of scan lines 312 and a plurality of data lines 311 being insulated from each other and intersecting with each other on a side facing the third liquid crystal layer 32 to form a plurality of pixel units SP, each pixel unit SP is provided with a pixel electrode 36 and a thin film transistor 301, the pixel electrode 36 is electrically connected to a data line 311 of an adjacent thin film transistor 301 through the thin film transistor 301, and the array substrate 31 is further provided with a common electrode 35 on a side facing the third liquid crystal layer 32. The common electrode 35 and the pixel electrode 36 are located in different layers and are insulated from each other. The thin film transistor 301 includes a gate electrode, an active layer, a drain electrode, and a source electrode, the gate electrode and the scan line 312 are located on the same layer and electrically connected, the gate electrode and the active layer are isolated by an insulating layer, the source electrode is electrically connected to the data line 311, the drain electrode is electrically connected to the pixel electrode 36 through a contact hole, the data lines 311 and the scan lines 312 are electrically connected to the chip 310, that is, the first driving circuit 410 includes the scan lines 312, the data lines 311 and the thin film transistor 301, the first driving circuit 410 is connected to the chip 310 on the printed circuit board 300 through at least one second flexible circuit board 220, and for further detailed description of the array substrate 31, reference is made to the prior art, which is not repeated herein.
In the present embodiment, the second dimming cell 20 includes a third substrate 25 disposed opposite to the array substrate 31 and a second liquid crystal layer 24 between the third substrate 25 and the array substrate 31. The array substrate 31 is provided with a wire grid polarizing plate 21, an insulating layer 22, and a second pixel electrode layer 23 in this order toward the second liquid crystal layer 24 side, and the second driving line 420 is located at the second pixel electrode layer 23. The first driving line 410 of the display liquid crystal cell 30 includes a thin film transistor 301, and the thin film transistor 301 includes a metal electrode 34 disposed on the side of the array substrate 31 facing the third liquid crystal layer 32, and the metal electrode 34 may be a drain electrode of the thin film transistor 301.
Furthermore, a second through hole 50 is disposed between the second light modulation box 20 and the display liquid crystal box 30, and sequentially passes through the array substrate 31, the wire grid polarizer 21 and the insulating layer 22, the second driving circuit 420 is electrically connected to the metal electrode 34 through the second through hole 50, and as can be seen from the foregoing, the first driving circuit 410 where the metal electrode 34 is located is connected to the chip 310 of the printed circuit board 300 through at least one second flexible circuit board 220 by a lead, so that the second light modulation box is directly controlled to be turned on or turned off by the driving chip.
In summary, in the display device with switchable viewing angles provided by the present invention, the driving lines of the two liquid crystal cells are integrated on the same glass substrate or the same thin film transistor 301 through the through hole, and are connected to the printed circuit board 300 through the same flexible circuit board, so that the number of FPCs can be saved, and the manufacturing cost of the display device can be reduced.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A display device with switchable viewing angle, comprising a display panel (100), a flexible circuit board (200) and a printed circuit board (300), wherein the flexible circuit board (200) is bound between the display panel (100) and the printed circuit board (300), characterized in that the display panel (100) comprises a first liquid crystal cell and a second liquid crystal cell, and the first liquid crystal cell and the second liquid crystal cell are stacked up and down;
the flexible circuit board (200) comprises a first flexible circuit board (210) and/or at least one second flexible circuit board (220);
the first liquid crystal cell comprises a first drive line (410), the second liquid crystal cell comprises a second drive line (420);
a through hole is formed between the first liquid crystal box and the second liquid crystal box;
the first driving line (410) and the second driving line (420) are connected to the same first flexible circuit board (210) or the same second flexible circuit board (220) through the through hole.
2. A switchable viewing angle display device according to claim 1, wherein the first liquid crystal cell is a first light modulating cell (10) and the second liquid crystal cell is a second light modulating cell (20), the first light modulating cell (10) comprises a first substrate (11), a second substrate (14) arranged opposite to the first substrate (11) and a first liquid crystal layer (12) arranged between the first substrate (11) and the second substrate (14), and the second light modulating cell (20) comprises a third substrate (25) arranged opposite to the second substrate (14) and a second liquid crystal layer (24) arranged between the second substrate (14) and the third substrate (25).
3. A switchable viewing angle display device according to claim 2, wherein the second substrate (14) is provided with a first pixel electrode layer (13) on a side facing the first liquid crystal layer (12), the second substrate (14) is provided with a wire grid polarizer (21), an insulating layer (22) and a second pixel electrode layer (23) on a side facing the second liquid crystal layer (24), the first driving line (410) is located on the first pixel electrode layer (13), and the second driving line (420) is located on the second pixel electrode layer (23).
4. A switchable viewing angle display device according to claim 3, wherein a first through hole (40) is formed between the first and second dimming cells (10, 20) and sequentially passes through the second substrate (14), the wire grid polarizer (21) and the insulating layer (22), the first pixel electrode layer (13) and the second pixel electrode layer (23) are connected through the first through hole (40), and the first driving line (410) is disposed in the same plane through the first through hole (40) and the second driving line (420) and connected to the first flexible circuit board (210).
5. A switchable viewing angle display device according to claim 4, wherein the first drive line (410) and the second drive line (420) are mutually insulated.
6. A switchable viewing angle display device according to claim 2, wherein the display panel (100) further comprises a display liquid crystal cell (30) stacked with the first and second light modulating cells (10, 20), the display liquid crystal cell (30) being located on a side of the first substrate (11) remote from the first liquid crystal layer (12) or on a side of the third substrate (25) remote from the second liquid crystal layer (24), and a driving line of the display liquid crystal cell (30) is connected to the printed circuit board (300) by at least one lead of the second flexible circuit board (220).
7. The switchable viewing angle display device of claim 1, wherein the first liquid crystal cell is a display liquid crystal cell (30), the second liquid crystal cell is a second light modulation cell (20), the display liquid crystal cell (30) includes a color film substrate (33), an array substrate (31) disposed opposite to the color film substrate (33), and a third liquid crystal layer (32) disposed between the color film substrate (33) and the array substrate (31), and the second light modulation cell (20) includes a third substrate (25) disposed opposite to the array substrate (31) and a second liquid crystal layer (24) disposed between the third substrate (25) and the array substrate (31).
8. A switchable viewing angle display device according to claim 7, wherein the array substrate (31) is provided with a wire grid polarizer (21), an insulating layer (22) and a second pixel electrode layer (23) in this order toward the second liquid crystal layer (24), and the second driving line (420) is located at the second pixel electrode layer (23).
9. A switchable viewing angle display device according to claim 8, wherein the first drive line (410) of the display liquid crystal cell (30) comprises a metal electrode (34), the metal electrode (34) being provided on the array substrate (31) side facing the third liquid crystal layer (32).
10. A switchable viewing angle display device according to claim 9, wherein a second through hole (50) is disposed between the second light modulation cell (20) and the display liquid crystal cell (30) and sequentially passes through the array substrate (31), the wire grid polarizer (21) and the insulating layer (22), the second driving line (420) is electrically connected to the metal electrode (34) through the second through hole (50), and the first driving line (410) where the metal electrode (34) is located is connected to the printed circuit board (300) through at least one second flexible circuit board (220) by wire bonding.
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| CN202110216838.4A CN113009742A (en) | 2021-02-26 | 2021-02-26 | Display device with switchable visual angle |
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Application publication date: 20210622 |