CN212031884U - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN212031884U CN212031884U CN202020953344.5U CN202020953344U CN212031884U CN 212031884 U CN212031884 U CN 212031884U CN 202020953344 U CN202020953344 U CN 202020953344U CN 212031884 U CN212031884 U CN 212031884U
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Abstract
The embodiment of the utility model discloses liquid crystal display device, include: a first liquid crystal cell including a first liquid crystal layer, the first liquid crystal cell for displaying an image; a second liquid crystal cell for switching a viewing angle, the second liquid crystal cell comprising: the first visual angle control electrode is positioned on the light emergent side of the first liquid crystal box; the second liquid crystal layer is positioned on one side of the first visual angle control electrode, which is far away from the first liquid crystal box; the touch electrode layer is positioned on one side of the second liquid crystal layer, which is far away from the first liquid crystal box; the touch and display integrated driving chip is electrically connected with the first visual angle control electrode so as to control the visual angle of the liquid crystal display device; and the touch and display integrated driving chip is electrically connected with the touch electrode layer so as to realize the touch function. The embodiment of the utility model provides a technical scheme realizes the switching at visual angle through touch-control and the integrated drive chip of demonstration on realizing the basis of touch-control function, has avoided the interference between the different signals, is favorable to promoting liquid crystal display device's wholeness ability.
Description
Technical Field
The embodiment of the utility model provides a relate to and show technical field, especially relate to a liquid crystal display device.
Background
The liquid crystal display device has the advantages of small volume, good picture quality, low driving voltage, relatively low manufacturing cost and the like, and occupies a leading position in the field of flat panel display.
With the continuous development of liquid crystal display technology, the existing display devices are gradually developed towards a wide viewing angle. People seek to effectively protect personal privacy from being peeped by others while pursuing a wide viewing angle, and therefore, a display device having a function of switching between a wide viewing angle and a narrow viewing angle is required. The prior art generally has two solutions, one is to adopt a key mode, lead out a signal for controlling a wide and narrow visual angle to a printed circuit board through a flexible circuit board, provide a liquid crystal deflection voltage through the printed circuit board, and control the visual angle switching, but the control mode is more complex; the other is a touch control mode, voltage is provided through an external printed circuit board, but a liquid crystal deflection signal and a touch control signal share the same flexible circuit board, interference is generated, and the overall performance is poor.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a liquid crystal display device to the realization reduces external signal's interference on touch-control function's basis, improves display device's wholeness ability.
The embodiment of the utility model provides a liquid crystal display device for realize visual angle and switch and touch-control function, include:
a first liquid crystal cell including a first liquid crystal layer, the first liquid crystal cell for displaying an image;
a second liquid crystal cell for switching a viewing angle, the second liquid crystal cell comprising:
the first visual angle control electrode is positioned on the light emergent side of the first liquid crystal box;
the second liquid crystal layer is positioned on one side, far away from the first liquid crystal box, of the first visual angle control electrode;
the touch electrode layer is positioned on one side, far away from the first liquid crystal box, of the second liquid crystal layer;
the touch and display integrated driving chip is electrically connected with the first visual angle control electrode so as to control the visual angle of the liquid crystal display device; and the touch and display integrated driving chip is electrically connected with the touch electrode layer so as to realize a touch function.
Preferably, the embodiment of the present invention provides a liquid crystal display device, further comprising:
the second visual angle control electrode is positioned on one side, far away from the first liquid crystal box, of the second liquid crystal layer; the touch and display integrated driving chip is electrically connected with the second viewing angle control electrode.
Preferably, the touch and display integrated driving chip comprises a gesture recognition unit, and the gesture recognition unit can generate a wide view angle control signal or a narrow view angle control signal according to a preset gesture signal.
Preferably, the preset gesture signal includes a gesture direction signal or a gesture area operation signal.
Preferably, the embodiment of the present invention provides a liquid crystal display device, further comprising:
the supporting layer is positioned on one side, close to the first liquid crystal box, of the touch electrode layer and comprises a through hole; the touch and display integrated driving chip is located at the end of the supporting layer and electrically connected with the first view angle control electrode through the via hole.
Preferably, the embodiment of the present invention provides a liquid crystal display device, further comprising:
and the metal wiring layer is arranged along the surface of the supporting layer, and the touch and display integrated driving chip is electrically connected with the touch electrode layer through the metal wiring layer.
Preferably, the embodiment of the present invention provides a liquid crystal display device, further comprising:
and the common electrode is positioned on one side of the second liquid crystal layer, which is far away from the first liquid crystal box.
Preferably, the common electrode is electrically connected with the touch and display integrated driving chip.
Preferably, the touch and display integrated driving chip comprises a gesture recognition unit, and the gesture recognition unit can generate a wide view angle control signal, a narrow view angle control signal or a full view angle control signal according to a preset gesture signal.
Preferably, the touch and display integrated driving chip is further electrically connected to the first liquid crystal cell to control a display image of the first liquid crystal cell.
The embodiment of the utility model provides a through setting up the touch-control and showing integrated driver chip, realize liquid crystal display device's visual angle switching and touch-control function. Specifically, according to the technical scheme provided by the embodiment of the present invention, the touch and display integrated driving chip is electrically connected to the touch electrode layer, so as to realize the touch function; meanwhile, the touch and display integrated driving chip is also electrically connected with the first visual angle control electrode, the touch and display integrated driving chip sends a wide visual angle control signal or a narrow visual angle control signal to the first visual angle control electrode, and the first visual angle control electrode controls liquid crystal molecules in the second liquid crystal layer to deflect according to the wide visual angle control signal or the narrow visual angle control signal, so that visual angle switching is realized. Therefore, compared with the prior art, the embodiment of the utility model provides a liquid crystal display device provides control signal for first visual angle control electrode through touch-control and display integrated drive chip, does not need external flexible line way board to provide voltage, just can directly control the deflection of liquid crystal in inside, has cancelled outside button operation simultaneously, carries out the switching of visual angle through the mode of touch-control, is favorable to improving user's experience; and the touch signal and the control liquid crystal deflection signal do not share the same circuit board and are directly controlled by the touch and display integrated driving chip, so that the interference among different signals is avoided, and the overall performance of the liquid crystal display device can be improved.
Drawings
Fig. 1 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present invention;
fig. 2 is a connection block diagram of an electrical structure of a liquid crystal display device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another lcd device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another lcd device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another lcd device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another lcd device according to an embodiment of the present invention;
fig. 7 is a control flowchart of an lcd device according to an embodiment of the present invention.
In the drawings, the features represented by the respective reference numerals are listed below:
10-a first liquid crystal cell; 20-a second liquid crystal cell; 401 — a first viewing angle control electrode; 50-a second liquid crystal layer; 501-liquid crystal molecules; 801-a touch electrode layer; 802-display integrated driver chip; 101-an array substrate; 102-a first liquid crystal layer; 103-a color film substrate; 8021-gesture recognition unit; 70-a support layer; 90-via holes; 403-a second viewing angle control electrode; 402-common electrode.
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.
The embodiment of the utility model provides a liquid crystal display device for realize visual angle and switch and touch-control function. Fig. 1 is a schematic structural diagram of a liquid crystal display device provided by an embodiment of the present invention, refer to fig. 1, an embodiment of the present invention provides a liquid crystal display device including: a first liquid crystal cell 10, the first liquid crystal cell 10 including a first liquid crystal layer 102, the first liquid crystal cell 10 for displaying an image;
the second liquid crystal cell 20 is used for switching the viewing angle, and the second liquid crystal cell 20 includes a first viewing angle control electrode 401, a second liquid crystal layer 50, a touch electrode layer 801, and a touch and display integrated driving chip 802.
Wherein, the first viewing angle control electrode 401 is located at the light emitting side of the first liquid crystal cell 10; the second liquid crystal layer 50 is located on the side of the first viewing angle control electrode 401 away from the first liquid crystal cell 10; the touch electrode layer 801 is located on one side of the second liquid crystal layer 50 away from the first liquid crystal cell 10; the touch and display integrated driving chip 802 is electrically connected to the first viewing angle control electrode 401 to control the viewing angle of the liquid crystal display device; and the touch and display integrated driving chip 802 is electrically connected to the touch electrode layer 801 to realize a touch function.
Specifically, the first liquid crystal cell 10 is used to realize normal display of the liquid crystal display device. The first liquid crystal cell 10 includes an array substrate 101, a first liquid crystal layer 102, and a color film substrate 103. The first liquid crystal layer 102 includes liquid crystal molecules and two transparent glass plates (not shown in fig. 1) disposed opposite to each other, and the liquid crystal molecules are located between the two transparent glass plates. The array substrate 101 is provided with pixel electrodes and thin film transistors, a plurality of pixel units are defined on the array substrate 101 by data lines and scanning lines, and each pixel unit is provided with one pixel electrode and one thin film transistor. A backlight in a liquid crystal display device emits light to a color filter substrate 103, a color thin film included in the color filter substrate 103 allows light of a desired color to pass therethrough, and filters other light, and a black matrix may be provided between the color filter substrates 103 to prevent light of different colors from being mixed. A first polarizer 301 and a second polarizer 302 are respectively disposed on the upper and lower sides of the first liquid crystal cell 10 for implementing image display.
In order to be privacy effective, the viewing angle of the light emitted by the first liquid crystal cell 10 needs to be changed. The second liquid crystal cell 20 is disposed on the light-emitting side of the first liquid crystal cell 10, the second liquid crystal cell 20 includes a first viewing angle control electrode 401, and the first viewing angle control electrode 401 may be an indium tin oxide electrode or a zinc tin oxide electrode. A second liquid crystal layer 50 is provided on a side of the first viewing angle control electrode 401 away from the first liquid crystal cell 10, and the second liquid crystal layer 50 includes liquid crystal molecules 501. The touch electrode layer 801 is located on a side of the second liquid crystal layer 50 away from the first liquid crystal cell 10, and a touch electrode is disposed in the touch electrode layer 801 and is capable of sensing touch operation. The touch and display integrated driving chip 802 is electrically connected to the touch electrode layer 801 through a metal wiring layer, and the touch and display integrated driving chip 802 is configured to provide a voltage signal and a driving signal to the touch electrode layer 801, so that the touch electrode layer 801 realizes a touch function. Meanwhile, the touch and display integrated driving chip 802 is further electrically connected to the first viewing angle control electrode 401, and the touch and display integrated driving chip 802 directly controls the voltage of the first viewing angle control electrode 401, so as to control the deflection of the liquid crystal molecules 501 in the second liquid crystal layer 50. Illustratively, the touch electrode layer 801 senses a touch operation of a finger and generates a touch signal, the touch and display integrated driving chip 802 is directly electrically connected to the first viewing angle control electrode 401, the touch and display integrated driving chip 802 outputs a viewing angle control signal to the first viewing angle control electrode 401 according to the touch signal, the first viewing angle control electrode 401 generates a corresponding electric field according to the viewing angle control signal, and under the action of the electric field, the liquid crystal molecules 501 in the second liquid crystal layer 50 deflect, thereby realizing switching between a wide viewing angle and a narrow viewing angle.
The embodiment of the utility model provides a through setting up the touch-control and showing integrated driver chip, realize liquid crystal display device's visual angle switching and touch-control function. According to the technical scheme provided by the embodiment of the utility model, the touch and display integrated driving chip is electrically connected with the touch electrode layer to realize the touch function; meanwhile, the touch and display integrated driving chip is also electrically connected with the first visual angle control electrode, the touch and display integrated driving chip sends a wide visual angle control signal or a narrow visual angle control signal to the first visual angle control electrode, and the first visual angle control electrode controls liquid crystal molecules in the second liquid crystal layer to deflect according to the wide visual angle control signal or the narrow visual angle control signal, so that visual angle switching is realized. Therefore, compared with the prior art, the embodiment of the utility model provides a liquid crystal display device provides control signal for first visual angle control electrode through touch-control and display integrated drive chip, does not need external flexible line way board to provide voltage, just can directly control the deflection of liquid crystal in inside, has cancelled outside button operation simultaneously, carries out the switching of visual angle through the mode of touch-control, is favorable to improving user's experience; and the touch signal and the control liquid crystal deflection signal do not share the same circuit board and are directly controlled by the touch and display integrated driving chip, so that the interference among different signals is avoided, and the overall performance of the liquid crystal display device can be improved.
Further, fig. 2 is a connection block diagram of an electrical structure of a liquid crystal display device according to an embodiment of the present invention. On the basis of the above embodiments, referring to fig. 2, the touch and display integrated driving chip 802 includes a gesture recognition unit 8021, and the gesture recognition unit 8021 can generate a wide view angle control signal or a narrow view angle control signal according to a preset gesture signal.
Specifically, the touch electrode layer 801 is configured to sense an external preset gesture signal, convert the preset gesture signal into a corresponding electrical signal, and transmit the electrical signal to the touch and display integrated driving chip 802. The touch and display integrated driving chip 802 includes a gesture recognition unit 8021, and the gesture recognition unit 8021 can generate a viewing angle control signal according to the received electrical signal to control the liquid crystal molecules 501 in the second liquid crystal layer 50 to deflect. Wherein the viewing angle control signal includes a wide viewing angle control signal and a narrow viewing angle control signal. The touch electrode layer 801 may be a capacitive touch layer and include a touch electrode block, where the touch electrode block may generate a preset gesture signal according to a preset gesture induction, and the preset gesture signal includes a gesture direction signal or a gesture area operation signal. The gesture direction signal may be a gesture signal generated by sliding a finger or a stylus on the touch electrode layer 801 in a designated direction, and the gesture area operation signal may be a gesture signal generated by drawing different patterns on the touch electrode layer 801. The viewing angle control signal may be a voltage signal, and different voltage signals correspond to different viewing angles.
For example, as shown in fig. 1, a circular pattern is drawn on the touch electrode layer 801, the touch electrode layer 801 generates a corresponding preset gesture signal by sensing the circular pattern, the gesture recognition unit 8021 outputs a 0V voltage signal to the first viewing angle control electrode 401 according to the preset gesture signal, and the first viewing angle control electrode 401 controls the liquid crystal molecules 501 to return to a parallel state (the second liquid crystal layer 50 may be a horizontally aligned liquid crystal) under the action of the 0V voltage, so that the liquid crystal display device is in a wide viewing angle display state.
Fig. 3 is the embodiment of the utility model provides another kind of liquid crystal display device's structural schematic diagram, refer to fig. 3, if need switch to narrow visual angle display state, then draw a triangle-shaped pattern on touch-control electrode layer 801, touch-control electrode layer 801 generates the corresponding gesture signal of predetermineeing through the response triangle-shaped pattern, gesture recognition cell 8021 outputs 5V voltage signal to first visual angle control electrode 401 according to predetermineeing the gesture signal, first visual angle control electrode 401 is under the effect of 5V voltage, control liquid crystal molecule 501 deflects certain angle, for example 60, thereby make the light that sends through first liquid crystal box 10 have partly to be blocked by second liquid crystal layer 50, can not transmit out, and then make liquid crystal display device be in narrow visual angle display state. Through different gesture operations, the switching of the wide and narrow visual angles of the liquid crystal display device can be rapidly realized.
Further, fig. 4 is a schematic structural diagram of another liquid crystal display device according to an embodiment of the present invention. On the basis of the above embodiments, referring to fig. 4, an embodiment of the present invention provides a liquid crystal display device further including: the support layer 70 is positioned on one side, close to the first liquid crystal cell 10, of the touch electrode layer 801, and the support layer 70 comprises a via hole 90; the touch and display integrated driving chip 802 is located at an end of the supporting layer 70, and the touch and display integrated driving chip 802 is electrically connected to the first viewing angle control electrode 401 through the via 90.
In particular, the supporting layer 70 may be a glass cover plate for supporting the touch and display integrated driving chip 802. A metal wiring layer (not shown) is disposed along the surface of the supporting layer 70, and the touch and display integrated driving chip 802 is electrically connected to the touch electrode layer 801 through the metal wiring layer, so as to implement a touch function. The touch and display integrated driver chip 802 is disposed at an end of the supporting layer 70, and the touch and display integrated driver chip 802 includes a bonding area (not shown) for bonding a metal wiring layer. Holes are punched in the supporting layer 70 to form via holes, and the touch and display integrated driving chip 802 is electrically connected to the first viewing angle control electrode 401 through the via holes. Wherein, conductive substances can be added into the via holes. By punching the supporting layer 70, the control of the first viewing angle control electrode 401 can be realized without externally providing a wiring port, thereby saving outgoing lines of viewing angle control signals (including wide viewing angle control signals and narrow viewing angle control signals), and facilitating cost reduction.
Further, fig. 5 is a schematic structural diagram of another liquid crystal display device according to an embodiment of the present invention. On the basis of the above embodiments, referring to fig. 5, an embodiment of the present invention provides a liquid crystal display device further including: a second viewing angle control electrode 403, the second viewing angle control electrode 403 being located on a side of the second liquid crystal layer 50 away from the first liquid crystal cell 10; the touch and display integrated driving chip 802 is electrically connected to the second viewing angle control electrode 403.
Specifically, the second viewing angle control electrode 403 may be an indium tin oxide electrode, and is electrically connected to the touch and display integrated driving chip 802 through the via 90. Horizontal deflection and vertical deflection of the liquid crystal molecules 501 can be realized through the first viewing angle control electrode 401 and the second viewing angle control electrode 403, that is, under the combined action of the first viewing angle control electrode 401 and the second viewing angle control electrode 403, the liquid crystal molecules 501 in the second liquid crystal layer 50 are controlled to deflect in multiple angles. Illustratively, the liquid crystal display device is currently in a wide viewing angle display state in which the liquid crystal molecules 501 are in a horizontal state. A triangular pattern is drawn on the touch electrode layer 801, the touch electrode layer 801 generates a corresponding preset gesture signal by sensing the triangular pattern, the gesture recognition unit 8021 outputs a 5V voltage signal to the first viewing angle control electrode 401 according to the preset gesture signal, and the first viewing angle control electrode 401 controls the liquid crystal molecules 501 to horizontally deflect by a certain angle, such as 60 °, under the action of the 5V voltage, so that a part of light emitted by the first liquid crystal cell 10 is blocked by the second liquid crystal layer 50 and cannot be transmitted, and the liquid crystal display device is in a narrow viewing angle display state. However, the liquid crystal molecules 501 are too large in the deflection angle, and therefore, the liquid crystal display device is poor in the screen display effect when viewed from the front. At this time, the liquid crystal molecules 501 may be controlled by the second viewing angle control electrode 403, so that the liquid crystal molecules 501 may be vertically deflected by a certain angle, for example, 45 °, on the basis of being horizontally deflected by 60 °, thereby achieving an optimal anti-peeping effect, and the image display may not be affected.
Referring to fig. 2, the touch and display integrated driving chip 802 includes a gesture recognition unit 8021, and the gesture recognition unit 8021 can generate a wide view angle control signal, a narrow view angle control signal, or a full view angle control signal according to a preset gesture signal. For example, a straight line is drawn on the touch electrode layer 801, the touch electrode layer 801 generates a corresponding preset gesture signal by sensing the straight line, the gesture recognition unit 8021 outputs a full view angle control signal to the second view angle control electrode 403 according to the preset gesture signal, and the second view angle control electrode 403 controls the liquid crystal molecules 501 to horizontally and vertically deflect by a certain angle under the action of the full view angle control signal.
That is to say, the touch and display integrated driving chip 802 outputs the wide viewing angle control signal to the first viewing angle control electrode 401 by sensing the first gesture (drawing a circular pattern), or outputs the narrow viewing angle control signal to the first viewing angle control electrode 401 by sensing the second gesture (drawing a triangular pattern), and the liquid crystal molecules 501 realize alignment or deflection under the control of the first viewing angle control electrode 401. In the process of aligning or deflecting the liquid crystal molecules 501, the touch and display integrated driving chip 802 may output a full view angle control signal to the second view angle control electrode 403 by sensing a third gesture (drawing a straight line), and under the combined action of the first view angle control electrode 401 and the second view angle control electrode 403, the liquid crystal molecules 501 between the first view angle control electrode 401 and the second view angle control electrode 403 are subjected to electric fields in different directions, so that vertical deflection is realized on the basis of horizontal deflection. Compared with the prior art, under the full-view control signal, the first view angle control electrode 401 and the second view angle control electrode 403 are combined, the horizontal deflection of the liquid crystal molecules 501 is realized, and meanwhile, the vertical deflection of the liquid crystal molecules 501 can also be realized, so that the display effect of the liquid crystal display device is not influenced, the narrow view angle in the horizontal direction can be realized, the narrow view angle in the vertical direction can also be realized, and the optimal all-around peep-proof effect is obtained. The control signals of the first viewing angle control electrode 401 and the second viewing angle control electrode 403 are respectively controlled by the touch and display integrated driving chip 802, and no interference is generated among the signals; meanwhile, the touch and display integrated driving chip 802 is disposed on the supporting layer 70, and does not need to provide a viewing angle control signal through an external circuit board, and each electrode provides a control signal separately by the touch and display integrated driving chip 802, so that a signal sharing phenomenon does not occur, and the overall display effect and the peep-proof effect of the liquid crystal display device are greatly improved.
In other embodiments, the preset gesture corresponding to the full view angle control signal may also be a gesture of a relative sliding operation of two fingers, and the gesture recognition unit 8021 outputs the adjustable full view angle control signal according to the relative sliding distance by recognizing the relative sliding operation of the two fingers, so as to implement switching of the continuously adjustable view angle state.
On the basis of the above embodiment, with continued reference to fig. 5, the liquid crystal display device provided by the embodiment of the present invention further includes a common electrode 402 located on a side of the second liquid crystal layer 50 away from the first liquid crystal cell 10.
Specifically, the common electrode 402 is provided for forming an electric field in cooperation with the first viewing angle control electrode 401 and the second viewing angle control electrode 403 to effect deflection of the liquid crystal molecules 501 in the second liquid crystal layer 50. The common electrode 402 is electrically connected to the touch and display integrated driving chip 802, and the touch and display integrated driving chip 802 provides a control signal. An insulating layer 410 is provided between the common electrode 402 and the second viewing angle control electrode 403 to prevent a short circuit phenomenon between the common electrode 402 and the second viewing angle control electrode 403. The common electrode 402 and the support layer 70 are bonded by the adhesive layer 60.
Further, fig. 6 is a schematic structural diagram of another liquid crystal display device according to an embodiment of the present invention. On the basis of the above embodiments, referring to fig. 6, the touch and display integrated driving chip 802 is further electrically connected to the first liquid crystal cell 10 to control the display image of the liquid crystal cell 10. The touch and display integrated driving chip 802 provides control signals for the first viewing angle control electrode 401, the common electrode 402, the second viewing angle control electrode 403, and the touch electrode 801 to control the touch display of the liquid crystal display device and the deflection of the liquid crystal molecules 501 in the second liquid crystal layer 50, and also provides control signals for the first liquid crystal cell 10 to realize the display of the image of the liquid crystal display device. The embodiment of the utility model provides a touch-control function, display function and peep-proof function that just can realize liquid crystal display device simultaneously through setting up touch-control and showing integrated driver chip 802 have improved liquid crystal display device's wholeness ability greatly, and do not need external flexible line way board to provide voltage, just can directly control the deflection of liquid crystal in inside, cancelled outside key operation simultaneously, carry out the switching of visual angle through the mode of touch-control, are favorable to improving user's experience; and the touch control signal and the control liquid crystal deflection signal do not share the same circuit board and are directly controlled by the touch control and display integrated driving chip, so that the interference among different signals is avoided.
Specifically, with continued reference to fig. 6, the liquid crystal display device includes: the liquid crystal display panel comprises a first polarizer 301, a first liquid crystal box 10, a second polarizer 302, a black matrix 303 and a second liquid crystal box 20 which are sequentially stacked from bottom to top. The first liquid crystal cell 10 includes an array substrate 101, a first liquid crystal layer 102, and a color film substrate 103, which are sequentially stacked from bottom to top. The second liquid crystal cell 20 includes a first viewing angle control electrode 401, a second liquid crystal layer 50, a second viewing angle control electrode 403, an insulating layer 410, a common electrode 402, an adhesive layer 60, a support layer 70, and a touch electrode 801, which are sequentially stacked from bottom to top.
The liquid crystal display device further includes a touch and display integrated driving chip 802, and the touch and display integrated driving chip 802 is electrically connected to the common electrode 402, the second viewing angle control electrode 403, the first viewing angle control electrode 401 in the second liquid crystal cell 20, and the array substrate 101 in the first liquid crystal cell 10, respectively. The display integrated driving chip 802 can simultaneously realize the touch function, the display function and the peep-proof function of the liquid crystal display device, thereby greatly improving the overall performance of the liquid crystal display device, directly controlling the deflection of liquid crystal inside without the need of external flexible circuit board to provide voltage, simultaneously canceling external key operation, switching the visual angle in a touch manner, and being beneficial to improving the user experience; and the touch control signal and the control liquid crystal deflection signal do not share the same circuit board and are directly controlled by the touch control and display integrated driving chip, so that the interference among different signals is avoided.
Further, fig. 7 is a control flowchart of a liquid crystal display device according to an embodiment of the present invention. Referring to fig. 6 and 7, a specific operation principle of the liquid crystal display device according to the embodiment of the present invention is as follows:
the touch and display integrated driving chip 802 is electrically connected to the touch electrode layer 801 to provide a voltage signal to the touch electrode layer 801, and the touch electrode layer 801 realizes a touch function by sensing a preset gesture. The gesture recognition unit 8021 in the touch and display integrated driver chip 802 recognizes a preset gesture. If the gesture recognition unit 8021 recognizes the first gesture, the touch and display integrated driving chip 802 outputs a wide view control signal to the first view control electrode 401 according to the first gesture signal, for example, the wide view control signal may be a 0V electrical signal. The common electrode 402 is a ground electrode, so that the electric field intensity between the first viewing angle control electrode 401 and the common electrode 402 is zero, and the liquid crystal molecules 501 in the second liquid crystal layer 50 return from the deflected state to the positive state, thereby enlarging the light-emitting angle of the liquid crystal display device, and enabling the liquid crystal display device to be in a wide viewing angle state. If the gesture recognition unit 8021 recognizes that the preset gesture is the second gesture, the touch and display integrated driving chip 802 outputs a narrow viewing angle control signal to the first viewing angle control electrode 401 according to the second gesture signal, for example, the narrow viewing angle control signal may be a +5V or-5V electrical signal. The common electrode 402 is a ground electrode, so an electric field is formed between the first viewing angle control electrode 401 and the common electrode 402, and under the action of the electric field, the liquid crystal molecules 501 are deflected, so that the light-emitting angle of the liquid crystal display device is reduced, and the liquid crystal display device is switched from a wide viewing angle state to a narrow viewing angle state. When the liquid crystal display device is in a wide view angle or narrow view angle state, if the gesture recognition unit 8021 continues to recognize that the preset gesture is the third gesture, the touch and display integrated driving chip 802 outputs a full view angle control signal to the second view angle control electrode 401 according to the third gesture signal, and under the combined action of the first view angle control electrode 401, the second view angle control electrode 403 and the common electrode 402, the liquid crystal molecules 501 realize horizontal and vertical deflection, so that image display can be better realized.
The embodiment of the utility model provides a through setting up the touch-control and showing integrated driver chip, realize liquid crystal display device's visual angle switching and touch-control function. According to the technical scheme provided by the embodiment of the utility model, the touch and display integrated driving chip is electrically connected with the touch electrode layer to realize the touch function; meanwhile, the touch and display integrated driving chip is also electrically connected with the first visual angle control electrode, the touch and display integrated driving chip sends a wide visual angle control signal or a narrow visual angle control signal to the first visual angle control electrode, and the first visual angle control electrode controls liquid crystal molecules in the second liquid crystal layer to deflect according to the wide visual angle control signal or the narrow visual angle control signal, so that visual angle switching is realized. By providing the second viewing angle controlling electrode, horizontal and vertical deflection of the liquid crystal molecules can be achieved. Therefore, compared with the prior art, the embodiment of the utility model provides a liquid crystal display device provides control signal for first visual angle control electrode, common electrode and second visual angle control electrode through touch-control and display integrated drive chip, does not need external flexible line way board to provide voltage, just can directly control the deflection of liquid crystal in inside, has cancelled outside key operation simultaneously, carries out the switching of visual angle through the mode of touch-control, is favorable to improving user's experience; and the touch signal and the control liquid crystal deflection signal do not share the same circuit board and are directly controlled by the touch and display integrated driving chip, so that the interference among different signals is avoided, and the overall performance of the liquid crystal display device can be improved. In addition, the touch and display integrated driving chip is arranged inside the liquid crystal display module, so that external wiring ports and connecting wires are saved, and the manufacturing cost of the liquid crystal display device is reduced.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a liquid crystal display device for realize visual angle switching and touch-control function, its characterized in that includes:
a first liquid crystal cell including a first liquid crystal layer, the first liquid crystal cell for displaying an image;
a second liquid crystal cell for switching a viewing angle, the second liquid crystal cell comprising:
the first visual angle control electrode is positioned on the light emergent side of the first liquid crystal box;
the second liquid crystal layer is positioned on one side, far away from the first liquid crystal box, of the first visual angle control electrode;
the touch electrode layer is positioned on one side, far away from the first liquid crystal box, of the second liquid crystal layer;
the touch and display integrated driving chip is electrically connected with the first visual angle control electrode so as to control the visual angle of the liquid crystal display device; and the touch and display integrated driving chip is electrically connected with the touch electrode layer so as to realize a touch function.
2. The liquid crystal display device according to claim 1, further comprising:
the second visual angle control electrode is positioned on one side, far away from the first liquid crystal box, of the second liquid crystal layer; the touch and display integrated driving chip is electrically connected with the second viewing angle control electrode.
3. The liquid crystal display device according to claim 1, wherein the touch and display integrated driving chip comprises a gesture recognition unit, and the gesture recognition unit can generate a wide viewing angle control signal or a narrow viewing angle control signal according to a preset gesture signal.
4. The LCD device according to claim 3, wherein the preset gesture signal comprises a gesture direction signal or a gesture area operation signal.
5. The liquid crystal display device according to claim 1, further comprising:
the supporting layer is positioned on one side, close to the first liquid crystal box, of the touch electrode layer and comprises a through hole; the touch and display integrated driving chip is located at the end of the supporting layer and electrically connected with the first view angle control electrode through the via hole.
6. The liquid crystal display device according to claim 5, further comprising:
and the metal wiring layer is arranged along the surface of the supporting layer, and the touch and display integrated driving chip is electrically connected with the touch electrode layer through the metal wiring layer.
7. The liquid crystal display device according to claim 1, further comprising:
and the common electrode is positioned on one side of the second liquid crystal layer, which is far away from the first liquid crystal box.
8. The LCD device of claim 7, wherein the common electrode is electrically connected to the touch and display integrated driver IC.
9. The LCD device according to claim 7, wherein the touch and display integrated driver chip comprises a gesture recognition unit, and the gesture recognition unit can generate a wide view angle control signal, a narrow view angle control signal or a full view angle control signal according to a preset gesture signal.
10. The lcd device of claim 1, wherein the touch and display integrated driver chip is further electrically connected to the first liquid crystal cell to control the display image of the first liquid crystal cell.
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| CN202020953344.5U CN212031884U (en) | 2020-05-29 | 2020-05-29 | Liquid crystal display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024040543A1 (en) * | 2022-08-25 | 2024-02-29 | 昆山龙腾光电股份有限公司 | Wide and narrow viewing angle-switchable display device and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024040543A1 (en) * | 2022-08-25 | 2024-02-29 | 昆山龙腾光电股份有限公司 | Wide and narrow viewing angle-switchable display device and control method |
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