CN116859630A - Display module, driving method and display device - Google Patents

Display module, driving method and display device Download PDF

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Publication number
CN116859630A
CN116859630A CN202310949237.3A CN202310949237A CN116859630A CN 116859630 A CN116859630 A CN 116859630A CN 202310949237 A CN202310949237 A CN 202310949237A CN 116859630 A CN116859630 A CN 116859630A
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CN
China
Prior art keywords
light
liquid crystal
electrode
display module
peep
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Pending
Application number
CN202310949237.3A
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Chinese (zh)
Inventor
文华银
袁海江
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HKC Co Ltd
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HKC Co Ltd
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Publication date
Application filed by HKC Co Ltd filed Critical HKC Co Ltd
Priority to CN202310949237.3A priority Critical patent/CN116859630A/en
Publication of CN116859630A publication Critical patent/CN116859630A/en
Pending legal-status Critical Current

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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
    • G02F1/1323—Arrangements for providing a switchable viewing angle
    • 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal 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
    • 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
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • 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
    • 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
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • 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
    • G02F1/1336—Illuminating devices
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • 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
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Liquid Crystal (AREA)

Abstract

The application discloses a display module, a driving method and a display device, and relates to the technical field of display; the display module comprises a first electrode, a light adjusting layer and a second electrode, wherein the first electrode is arranged on one side of the lower polaroid far away from the display layer; the light adjusting layer is arranged on one side of the first electrode, which is far away from the lower polaroid, the light adjusting layer comprises a liquid crystal part and a shading part which are arranged at intervals, one side of the shading part, which is close to the liquid crystal part, is obliquely arranged, the shading part comprises a light-transmitting matrix and a peep-proof structure which is arranged in the light-transmitting matrix, and the peep-proof structure shields light which is incident to the peep-proof structure along the direction perpendicular to the light-emitting surface of the display module; the second electrode is arranged on one side of the light adjusting layer away from the first electrode, and the first electrode and the second electrode form an electric field to control liquid crystal molecules; the use requirement of a user for switching the display mode is met by controlling the deflection condition of liquid crystal molecules in the liquid crystal layer.

Description

Display module, driving method and display device
Technical Field
The present application relates to the field of display technologies, and in particular, to a display module, a driving method, and a display device.
Background
With the continuous development of display technology, the visual angle of the display panel is wider and wider, and the visual angle of the current display panel is close to 180 degrees, so that a user can watch the content displayed by the display panel at all angles, and basically realize the viewing experience without dead angles, however, in public places, the privacy leakage of the user is also brought unnecessary trouble due to the increase of the visual angle.
At present, in order to avoid privacy disclosure, a peep-proof film is often added on a display screen to realize convergence of a visual angle, but the problems of display panel brightness reduction and poor display effect are also brought while effective peep-proof are solved, and the peep-proof film can only unidirectionally peep-proof, so that when a user needs to share display contents to other users, the peep-proof film cannot be switched back to a normal mode from the peep-proof mode, and the use experience of the user is reduced.
Disclosure of Invention
The application aims to provide a display module, a driving method and a display device, which can meet the use requirement of a user for switching a display mode by controlling the deflection condition of liquid crystal molecules in a liquid crystal layer.
The application discloses a display module, which comprises an upper polaroid, a display layer, a lower polaroid, a first electrode, a light adjusting layer and a second electrode, wherein the upper polaroid and the lower polaroid are respectively arranged at two sides of the display layer; the light adjusting layer is arranged on one side of the first electrode, far away from the lower polaroid, and comprises a liquid crystal part and a shading part which are arranged at intervals, wherein the shading part is obliquely arranged towards the side wall of the liquid crystal part, liquid crystal molecules are arranged in the liquid crystal part, the shading part comprises a light-transmitting matrix and a peep-proof structure arranged in the light-transmitting matrix, and the peep-proof structure shields light rays entering the peep-proof structure along the direction of the light-emitting surface of the display module; the second electrode is arranged on one side of the light adjusting layer away from the first electrode, and the first electrode and the second electrode form an electric field to control the liquid crystal molecules; when the display module is in the peep-proof mode, the first electrode and the second electrode are not electrified, and the refractive index of the liquid crystal part is equal to that of the light-transmitting matrix; when the display module is in a wide view angle mode, the first electrode and the second electrode are electrified, and the refractive index of the liquid crystal part is unequal to the refractive index of the light-transmitting matrix.
Optionally, the peep-proof structure includes a plurality of light absorption layers that set up in the printing opacity base member, and is a plurality of the light absorption layer interval sets up, just the light absorption layer with the income plain noodles of light regulation layer is the slope setting.
Optionally, the light shielding part further includes a glass substrate, and the glass substrate is disposed between the light transmitting substrate and the liquid crystal part; wherein the refractive index of the glass matrix is the same as the refractive index of the light-transmitting matrix.
Optionally, two adjacent peep-proof structures are symmetrically arranged along the central axis of the liquid crystal portion.
Optionally, the liquid crystal molecules include a vertical state and a horizontal state; when the display module is in a peep-proof mode, the liquid crystal molecules are in a vertical state; when the display module is in a wide view angle mode, the liquid crystal molecules are in a horizontal state.
Optionally, the included angle between the light absorption layer and the light incident surface of the light adjusting layer is 30-50 degrees.
Optionally, the ratio of the area of the light shielding part to the area of the liquid crystal part is 1:1.
Optionally, the light absorbing layer is made of any one of light absorbing dye and black body material, and the light transmitting matrix is made of glass.
The application also discloses a driving method for driving the display module, which comprises the following steps:
in the peep-proof mode, the first electrode and the second electrode are not electrified;
in the wide viewing angle mode, the first electrode and the second electrode are energized;
when the display module is in the peep-proof mode, the first electrode and the second electrode are not electrified, and the refractive index of the liquid crystal part is equal to that of the light-transmitting matrix; when the display module is in a wide view angle mode, the first electrode and the second electrode are electrified, and the refractive index of the liquid crystal part is unequal to the refractive index of the light-transmitting matrix.
The application also discloses a display device which comprises a driving circuit and the display module, wherein the driving circuit drives the display module.
According to the display module, whether the first electrode and the second electrode are electrified or not is controlled to control whether the liquid crystal molecules in the liquid crystal part deflect or not, so that whether light rays can penetrate through the peep-proof structure to be injected into the display layer or not is controlled, the display module is switched between the peep-proof mode and the wide view angle mode, a user can switch between the peep-proof mode and the wide view angle mode according to the self-watching requirement, the use requirement of the user is met, and the use experience of the user is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is evident that the figures in the following description are only some embodiments of the application, from which other figures can be obtained without inventive effort for a person skilled in the art. In the drawings:
fig. 1 is a schematic structural diagram of a display module according to a first embodiment of the present application;
fig. 2 is a schematic view illustrating a light path of a display module in a peep-proof mode according to a first embodiment of the application;
FIG. 3 is a schematic view illustrating a light path of a display module in a wide viewing angle mode according to a first embodiment of the present application;
FIG. 4 is a schematic view showing a light path of a display module according to a first embodiment of the present application when liquid crystal molecules are deflected 45 degrees in a wide viewing angle mode;
FIG. 5 is a schematic view of a light path of a display module according to a first embodiment of the present application when the display module is a single-sided privacy module;
fig. 6 is a schematic structural diagram of a display module according to a second embodiment of the present application;
fig. 7 is a schematic view illustrating a light path of a display module in a peep-proof mode according to a second embodiment of the application;
FIG. 8 is a schematic view illustrating a light path of a display module in a wide viewing angle mode according to a second embodiment of the present application;
FIG. 9 is a schematic view showing a light path of a display module according to a second embodiment of the present application when liquid crystal molecules are deflected 45 degrees in a wide viewing angle mode;
fig. 10 is a schematic view of a light path of a display module according to a second embodiment of the present application when the display module is a single-sided privacy module;
FIG. 11 is a flow chart of steps of a driving method according to a third embodiment of the present application;
fig. 12 is a schematic structural view of a display device according to a fourth embodiment of the present application.
100, a display module; 110. a polaroid is arranged on the upper surface of the substrate; 120. a display layer; 130. a lower polarizer; 140. a first electrode; 150. a light adjusting layer; 160. a liquid crystal section; 161. liquid crystal molecules; 170. a light shielding section; 171. a light-transmitting substrate; 172. a peep-proof structure; 173. a light absorbing layer; 174. a glass substrate; 180. a second electrode; 200. a driving circuit; 300. a display device.
Detailed Description
It is to be understood that the terminology used herein, the specific structural and functional details disclosed are merely representative for the purpose of describing particular embodiments, but that the application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The terms "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or groups thereof may be present or added.
In addition, terms of the azimuth or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are described based on the azimuth or relative positional relationship shown in the drawings, are merely for convenience of description of the present application, and do not indicate that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The present application will be described in detail below with reference to the drawings and the optional embodiments, and it should be noted that, without conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
As shown in fig. 1 to 3, as a first embodiment of the present application, a display module 100 is disclosed, the display module 100 includes an upper polarizer 110, a display layer 120, and a lower polarizer 130, the upper polarizer 110 and the lower polarizer 130 are respectively disposed at two sides of the display layer 120, the display module 100 further includes a first electrode 140, a light adjusting layer 150, and a second electrode 180, the first electrode 140 is disposed at a side of the lower polarizer 130 away from the display layer 120, the light adjusting layer 150 is disposed at a side of the first electrode 140 away from the lower polarizer 130, the light adjusting layer 150 includes a liquid crystal portion 160 and a light shielding portion 170 disposed at a distance from each other, the light shielding portion 170 is disposed obliquely toward a side wall of the liquid crystal portion 160, the liquid crystal portion 160 is provided with liquid crystal molecules 161, the light shielding portion 170 includes a light-transmitting substrate 171 and a light-shielding structure 172 disposed in the light-transmitting substrate 171, the light shielding structure 172 is incident to the light shielding structure 172 along a direction of a light-emitting surface of the display module 100, the second electrode 180 is disposed at a side of the first electrode 140 away from the first electrode 150, and the light shielding structure 180 is disposed at a side of the first electrode 180 away from the first electrode 140; it should be noted that, the light provided to the display module may be a light emitting structure such as a backlight module or a lamp panel.
When the display module 100 is in the peep-proof mode, the first electrode 140 and the second electrode 180 are not energized, the refractive index of the liquid crystal portion 160 is equal to that of the transparent substrate 171, the light is incident from the incident surface of the light adjusting layer 150, at this time, the light corresponding to the light shielding portion 170 and the light corresponding to the liquid crystal portion 160 exist, when the light corresponding to the light shielding portion 170 is incident into the light shielding portion 170, part of the light irradiates onto the peep-proof structure 172 of the light shielding portion 170 and is further blocked by the peep-proof structure 172 in the light shielding portion 170, and when the light corresponding to the liquid crystal portion 160 is incident into the liquid crystal portion 160, part of the light passes through the liquid crystal portion 160 and is incident into the display layer 120, and when part of the light passes through the transparent substrate 171 of the light shielding portion 170, the propagation direction of the light is not changed, and then the part of the light is blocked by the peep-proof structure 172 of the light shielding portion 170, so that the light intensity of the position of the display layer 120 corresponding to the liquid crystal portion 160 is greater than the light intensity of the position corresponding to the light shielding portion 170, and the peep-proof structure 172 is formed, and the user can only watch the content in the viewing angle perpendicular to the incident viewing angle of the display module 100 can not watch the content;
when the display module 100 is in the wide viewing angle mode, the first electrode 140 and the second electrode 180 are energized, and the first electrode 140 and the second electrode 180 form an electric field to deflect the liquid crystal molecules 161 in the liquid crystal portion 160, so that the refractive index of the liquid crystal portion 160 is not equal to the refractive index of the transparent substrate 171, and the light is refracted when entering the transparent substrate 171 from the liquid crystal portion 160 to change the propagation direction of the light; when light enters from the light incident surface of the light adjusting layer 150, there are light corresponding to the light shielding portion 170 and light corresponding to the liquid crystal portion 160, and when light corresponding to the light shielding portion 170 enters the light shielding portion 170, part of the light irradiates onto the peep-proof structure 172 of the light shielding portion 170 and is further blocked by the peep-proof structure 172 in the light shielding portion 170, and when light corresponding to the liquid crystal portion 160 enters the liquid crystal portion 160, part of the light passes through the liquid crystal portion 160 to be incident into the display layer 120, and when part of the light passes through the liquid crystal portion 160 to enter the light-transmitting substrate 171 of the light shielding portion 170, due to the fact that the refractive index of the liquid crystal portion 160 is not equal to the refractive index of the light-transmitting substrate 171, the propagation direction of the light can be changed when the light passes through the liquid crystal portion 160 to enter the light-transmitting substrate 171 of the light shielding portion 170, so that part of the light can be emitted out of the peep-proof structure 172 to enter the display layer 120 after changing the propagation direction of the light, and the light intensity of the position of the display layer 120 corresponding to the position of the liquid crystal portion 160 is almost the same as the light intensity of the position of the light corresponding to the light shielding portion 170 in the display layer 120, so that a wide viewing angle mode is formed, and the user can watch content at various angles.
In summary, in the display module 100 of the present embodiment, whether the first electrode 140 and the second electrode 180 are electrified or not is used to control whether the liquid crystal molecules 161 in the liquid crystal portion 160 deflect or not, so as to control whether the light can pass through the peep-proof structure 172 to be injected into the display layer 120, so as to realize the switching of the display module 100 between the peep-proof mode and the wide viewing angle mode, so that the user can switch between the peep-proof mode and the wide viewing angle mode according to the viewing requirement thereof, thereby meeting the use requirement of the user and improving the use experience of the user.
Wherein the liquid crystal molecules 161 include a vertical state and a horizontal state, when the display module 100 is in the peep-proof mode, the liquid crystal molecules 161 are in the vertical state, and the refractive index of the liquid crystal portion 160 is the same as the refractive index of the transparent substrate 171, so that the light beam does not change the propagation path of the light beam when the light beam is incident into the transparent substrate 171 of the light shielding portion 170 from the liquid crystal portion 160; when the display module 100 is in the wide viewing angle mode, the liquid crystal molecules 161 are in a horizontal state, and the refractive index of the liquid crystal portion 160 is different from that of the transparent substrate 171, so that the light beam emitted from the liquid crystal portion 160 into the transparent substrate 171 of the light shielding portion 170 changes the propagation direction of the light beam, so that a part of the light beam can pass through the peep preventing structure 172 to be emitted into the display layer 120 for displaying.
Further, the peep-proof structure 172 includes a plurality of light absorbing layers 173 disposed in the light-transmitting substrate 171, the light absorbing layers 173 are disposed at intervals, the light absorbing layers 173 and the light incident surface of the light adjusting layer 150 are disposed obliquely, the included angle between the light absorbing layers 173 and the light incident surface of the light adjusting layer 150 is between 30 and 50 degrees, in this embodiment, the included angle between the light absorbing layers 173 and the light incident surface of the light adjusting layer 150 is preferably 45 degrees, it should be noted that the included angle between the light absorbing layers 173 and the light incident surface of the light adjusting layer 150 may be designed according to the viewing angle requirement, which is not limited herein, and a designer may select the design according to the actual requirement; the light absorbing layer 173 is made of light absorbing dye or black body material, and when the light irradiates the light absorbing layer 173, the light is absorbed by the light absorbing layer 173, so that the light cannot be emitted out of the light absorbing layer 173, and the peep preventing structure 172 shields the light;
when the display module 100 is in the peep-proof mode, the first electrode 140 and the second electrode 180 are not energized, the refractive index of the liquid crystal portion 160 is equal to that of the transparent substrate 171, the light is perpendicularly incident from the incident surface of the light adjusting layer 150, at this time, the light corresponding to the light shielding portion 170 and the light corresponding to the liquid crystal portion 160 exist, when the light corresponding to the light shielding portion 170 is incident into the light shielding portion 170, part of the light irradiates onto the peep-proof structure 172 of the light shielding portion 170 and is absorbed by the light absorbing layer 173 of the peep-proof structure 172, so that the light cannot be emitted out of the light absorbing layer 173, and the light is blocked by the peep-proof structure 172, when the light corresponding to the liquid crystal portion 160 is incident into the liquid crystal portion 160, a part of the light can directly pass through the liquid crystal portion 160 to be injected into the display layer 120, and when a part of the light passes through the liquid crystal portion 160 and is injected into the light-transmitting substrate 171 of the light shielding portion 170, the propagation direction of the light is not changed, and then the part of the light can be absorbed by the light absorbing layer 173 of the light shielding structure 172 of the light shielding portion 170, so that the light can not be emitted out of the light absorbing layer 173 and is further shielded by the light shielding result, and therefore, the light intensity of the position of the display layer 120 corresponding to the liquid crystal portion 160 is greater than the light intensity of the position of the display layer 120 corresponding to the light shielding portion 170, so as to form a light shielding mode, and the light path is shown in fig. 2;
when the display module 100 is in the wide viewing angle mode, the first electrode 140 and the second electrode 180 are energized, and the first electrode 140 and the second electrode 180 form an electric field to deflect the liquid crystal molecules 161 in the liquid crystal portion 160, so that the refractive index of the liquid crystal portion 160 is not equal to the refractive index of the transparent substrate 171, and the light is refracted when entering the transparent substrate 171 from the liquid crystal portion 160 to change the propagation direction of the light; when light enters from the light incident surface of the light adjusting layer 150, there are light corresponding to the light shielding portion 170 and light corresponding to the liquid crystal portion 160, when the light corresponding to the light shielding portion 170 is incident into the light shielding portion 170, part of the light irradiates onto the peep preventing structure 172 of the light shielding portion 170 and is then blocked by the peep preventing structure 172 in the light shielding portion 170, and when the light corresponding to the liquid crystal portion 160 is incident into the liquid crystal portion 160, part of the light passes through the liquid crystal portion 160 to be incident into the display layer 120, when part of the light passes through the liquid crystal portion 160 to be incident into the light transmitting matrix 171 of the light shielding portion 170, since the refractive index of the liquid crystal portion 160 is not equal to the refractive index of the light transmitting matrix 171, the propagation direction of the light changes when the light passes through the liquid crystal portion 160 to be incident into the light transmitting matrix 171 of the light shielding portion 170, in this embodiment, the propagation direction of the part of the light is the same as the inclination direction of the light absorbing layer 173 of the peep preventing structure 172, that is parallel to the light absorbing layer 173, so that the part of the light can pass through the peep preventing structure 172 to be incident into the display layer 120 after changing the propagation direction of the light, and thus the light corresponding to the position of the light corresponding to the light shielding layer 120 has the same viewing angle as the light pattern shown in the view of the display layer 120; in general, in the peep-proof mode, the peep-proof structure 172 of the light shielding portion 170 can shield light, so that the display module 100 forms the peep-proof mode for the user to use; in the wide viewing angle mode, light is refracted when entering the light shielding portion 170 from the liquid crystal portion 160, and the light is converted from original vertical incidence into oblique incidence, so that the obliquely incident light can pass through the peep preventing structure 172 to provide light for the area originally shielded by the peep preventing structure 172, thereby forming the wide viewing angle mode of the display module 100.
Further, the two adjacent peep-proof structures 172 are symmetrically arranged along the central axis of the liquid crystal portion 160, so that, in the wide viewing angle mode, light passes through the peep-proof structures 172 of the light shielding portions 170 and is injected into the display layer 120, and the positions of the display layer 120 corresponding to the light shielding portions 170 are supplemented with light, and the light paths are as shown in fig. 3, so that the light shielded in the adjacent light shielding portions 170 can be supplemented with the light emitted from the adjacent peep-proof structures 172, thereby achieving the effect of the wide viewing angle mode; of course, two adjacent peep-proof structures 172 may not be stacked along the central axis of the liquid crystal portion 160 to form a single-sided peep-proof structure, as shown in fig. 5, the light absorbing layer 173 of the peep-proof structure 172 may be inclined toward the left side or inclined toward the right side, when in the wide viewing angle mode, the light passes through the liquid crystal portion 160 and enters the transparent substrate 171 of the light shielding portion 170, since the refractive index of the liquid crystal portion 160 is not equal to the refractive index of the transparent substrate 171, the propagation direction of the light may be changed when passing through the liquid crystal portion 160 and entering the transparent substrate 171 of the light shielding portion 170, in this embodiment, the propagation direction of the light may be the same as the inclination direction of the light absorbing layer 173 of the peep-proof structure 172, that is, so that the light may pass through the peep-proof structure 172 to enter the display layer 120 after changing the propagation direction of the light, and the display module 100 thus set may be applied on a bank operation teller machine or a special display machine, as an example, when a bank operation teller and a customer performs the wide viewing angle operation in the wide viewing angle mode, the customer may not need to open the privacy operation, and only enable the user to enter the safe viewing mode when the user operation mode.
In this embodiment, the ratio of the area of the light shielding portion 170 to the area of the liquid crystal portion 160 is 1:1, so that the number of light rays incident into the display layer 120 and the number of light rays shielded by the light shielding portion 170 are nearly identical in the peep-proof mode; of course, the area of the light shielding portion 170 and the area of the liquid crystal portion 160 may be selectively designed according to the actual requirement, for example, the area of the liquid crystal portion 160 is set to be larger than the area of the light shielding portion 170, so that the display effect is better in the peep-proof mode, and the designer can select and design according to the actual requirement without limitation.
When the display module 100 of the present embodiment is in the wide viewing angle mode, the first electrode 140 and the second electrode 180 may control the liquid crystal molecule 161 to deflect to 45 degrees, so that the light is incident from the incident surface of the light adjusting layer 150, at this time, there are a light corresponding to the light shielding portion 170 and a light corresponding to the liquid crystal portion 160, when the light corresponding to the light shielding portion 170 is incident into the light shielding portion 170, a part of the light will irradiate onto the peep preventing structure 172 of the light shielding portion 170, and then be blocked by the peep preventing structure 172 in the light shielding portion 170, and when the light corresponding to the liquid crystal portion 160 is incident into the liquid crystal portion 160, the light will be scattered when passing through the liquid crystal molecule 161, so that a plurality of directions of light beams emitted from the liquid crystal portion 160 will have a part of light passing through the light transmitting substrate 171 of the light shielding portion 160, and at this time, when the light passing through the light transmitting substrate 171 of the light shielding portion 170 will change the light transmitting direction of the light shielding portion 170, in this embodiment, the light transmitting direction of the part of the light is the same as the light shielding layer 173, and the light transmitting direction of the light shielding layer 173 is changed in the same direction as the light transmitting direction of the light transmitting layer 120 in the light transmitting direction of the light shielding layer 170, so that the light can be almost equal to the light transmitting direction of the light passing through the light transmitting layer 120 in the viewing angle direction of the light shielding layer 120 when the light is nearly parallel to the light transmitting direction of the light transmitting layer 120 when the light transmitting layer is shown in the light shielding layer 120.
As shown in fig. 6 to 9, which is a modification of the first embodiment of the present application, a display module 100 is disclosed, the light shielding portion 170 further including a glass substrate 174, the glass substrate 174 being disposed between the light transmitting substrate 171 and the liquid crystal portion 160, the glass substrate 174 having the same refractive index as the light transmitting substrate 171;
when the display module 100 is in the peep-proof mode, the first electrode 140 and the second electrode 180 are not energized, the refractive index of the liquid crystal portion 160 is the same as the refractive index of the transparent substrate 171 and the refractive index of the glass substrate 174, the light is vertically incident from the incident surface of the light adjusting layer 150, at this time, the light corresponding to the light shielding portion 170 and the light corresponding to the liquid crystal portion 160 exist, when the light corresponding to the light shielding portion 170 is incident into the light shielding portion 170, part of the light irradiates onto the peep-proof structure 172 of the light shielding portion 170 and is then absorbed by the light absorbing layer 173 of the peep-proof structure 172, so that the light cannot be emitted out of the light absorbing layer 173, and thus, when the light corresponding to the liquid crystal portion 160 is incident into the liquid crystal portion 160, part of the light can directly pass through the liquid crystal portion 160 to be incident into the display layer 120, and part of the light can pass through the glass substrate 174 of the liquid crystal portion 160 to be incident into the display layer 120, so that the intensity of the position of the display layer 120 corresponding to the light corresponding to the liquid crystal portion 170 is larger than that of the light corresponding to the light shielding portion 170, and the peep-proof structure 172 has a certain light-proof rate, as shown in fig. 7 is increased; when the display module 100 is in the wide viewing angle mode, the first electrode 140 and the second electrode 180 are energized, and the first electrode 140 and the second electrode 180 form an electric field to deflect the liquid crystal molecules 161 in the liquid crystal portion 160, so that the refractive index of the liquid crystal portion 160 is not equal to the refractive index of the transparent substrate 171 and the refractive index of the glass substrate 174, and the light is refracted when entering the glass substrate 174 from the liquid crystal portion 160 so as to change the propagation direction of the light; when light is incident from the light incident surface of the light adjusting layer 150, there are light corresponding to the light shielding portion 170 and light corresponding to the liquid crystal portion 160, and when light corresponding to the light shielding portion 170 is incident into the light shielding portion 170, part of the light irradiates onto the peep preventing structure 172 of the light shielding portion 170 and is then blocked by the peep preventing structure 172 in the light shielding portion 170, and when light corresponding to the liquid crystal portion 160 is incident into the liquid crystal portion 160, part of the light passes through the liquid crystal portion 160 to be incident into the display layer 120, and when part of the light passes through the liquid crystal portion 160 to be incident into the glass substrate 174 of the light shielding portion 170, since the refractive index of the liquid crystal portion 160 is not equal to the refractive index of the glass substrate 174, the propagation direction of the light changes when the light passes through the liquid crystal portion 160 to be incident into the glass substrate 174 of the light shielding portion 170, in this embodiment, the propagation direction of the part of the light is the same as the inclination direction of the light absorbing layer 173 of the peep preventing structure 172, so that the part of the light can pass through the peep preventing structure 172 to be incident into the display layer 120 after changing the propagation direction of the light, and the intensity of the position of the liquid crystal portion 160 is nearly the same as the intensity of the light corresponding to the position of the light shielding portion 120 in the wide view angle pattern of the display layer 120, as shown in fig. 8; in the peep-proof mode, the peep-proof structure 172 of the light shielding portion 170 can shield light, and the light can pass through the liquid crystal portion 160 and the glass substrate 174 of the light shielding portion 170 to be injected into the display layer 120, so that the display module 100 forms the peep-proof mode, and the light utilization rate of the display module 100 is increased to a certain extent; in the wide viewing angle mode, light is refracted when entering the glass substrate 174 of the light shielding portion 170 from the liquid crystal portion 160, and the light is converted from original vertical incidence to oblique incidence, so that the obliquely incident light can pass through the peep-proof structure 172 to provide light for the area originally shielded by the peep-proof structure 172, thereby forming the wide viewing angle mode of the display module 100; if the propagation direction of the light changed when the light passes through the liquid crystal portion 160 and enters the glass substrate 174 of the light shielding portion 170 is different from the inclination direction of the light absorbing layer 173 of the peep preventing structure 172, part of the light will be absorbed by the peep preventing structure 172 of the light shielding portion 170 to be shielded; in general, the glass substrate 174 is added to the light shielding portion 170 of the display module 100 in the present embodiment, so that the light utilization rate of the display module 100 can be improved in use, and the power consumption of the display module 100 is reduced to a certain extent, both in the peep-proof mode and the wide viewing angle mode.
In the display module 100 of this embodiment, when in the wide viewing angle mode, the first electrode 140 and the second electrode 180 are used to control the liquid crystal molecule 161 to deflect to 45 degrees, so that light is incident from the light incident surface of the light adjusting layer 150, at this time, there are light corresponding to the light shielding portion 170 and light corresponding to the liquid crystal portion 160, when light corresponding to the light shielding portion 170 is incident into the light shielding portion 170, part of the light irradiates onto the peep preventing structure 172 of the light shielding portion 170 and is further blocked by the peep preventing structure 172 in the light shielding portion 170, when light corresponding to the liquid crystal portion 160 is incident into the liquid crystal portion 160, light is scattered when passing through the liquid crystal molecule 161, so that light emitted in multiple directions is formed, and part of the light passes through the liquid crystal portion 160 and is incident into the glass substrate 174 of the light shielding portion 170, since the refractive index of the liquid crystal portion 160 and the refractive index of the glass substrate 174 are not equal, the propagation direction of the light is changed when the light passes through the liquid crystal portion 160 and enters the glass substrate 174 of the light shielding portion 170, in this embodiment, the propagation direction of the light is the same as the oblique direction of the light absorbing layer 173 of the peep preventing structure 172, that is, the propagation direction of the light is parallel to the light absorbing layer 173, so that the light can pass through the peep preventing structure 172 to enter the display layer 120 after changing the propagation direction of the light, and thus the light intensity of the display layer 120 corresponding to the position of the liquid crystal portion 160 is approximately the same as the light intensity of the display layer 120 corresponding to the position of the light shielding portion 170, so as to form a wide viewing angle mode, and the light path is shown in fig. 9.
Of course, the display module 100 of this embodiment may also form a single-sided peep-proof structure, as shown in fig. 10, where the light absorbing layer 173 of the peep-proof structure 172 may be inclined toward the left side or inclined toward the right side, when in the wide viewing angle mode, the light passes through the liquid crystal portion 160 and is incident into the glass substrate 174 of the light shielding portion 170, and when the refractive index of the liquid crystal portion 160 is unequal to the refractive index of the glass substrate 174, the light may change the propagation direction of the light when passing through the liquid crystal portion 160 and incident into the glass substrate 174 of the light shielding portion 170, in this embodiment, the propagation direction of the light is the same as the inclination direction of the light absorbing layer 173 of the peep-proof structure 172, i.e. the propagation direction of the light may pass through the peep-proof structure 172 to be incident into the display layer 120, and thus the display module 100 may be applied to a bank teller machine or a special display machine, for example, when a bank teller and a customer performs operation together, the wide viewing mode may be started, and when the customer performs operation together, the privacy may not be started, and the privacy may be controlled only by the customer may be required to input when the privacy may not be controlled.
As shown in fig. 11, as a third embodiment of the present application, there is disclosed a driving method for driving the display module set according to the above embodiment, the driving method including the steps of:
in the peep-proof mode, the first electrode and the second electrode are not electrified;
in the wide viewing angle mode, the first electrode and the second electrode are energized;
when the display module is in the peep-proof mode, the first electrode and the second electrode are not electrified, and the refractive index of the liquid crystal part is equal to that of the light-transmitting matrix; when the display module 100 is in the wide viewing angle mode, the first electrode and the second electrode are electrified, and the refractive index of the liquid crystal part is not equal to the refractive index of the transparent substrate; in the embodiment, whether the first electrode and the second electrode are electrified or not is controlled to control whether the liquid crystal molecules in the liquid crystal part deflect or not, so that whether light rays can penetrate through the peep-proof structure to be injected into the display layer is controlled, the display module is switched between the peep-proof mode and the wide view angle mode, a user can switch between the peep-proof mode and the wide view angle mode according to the self-watching requirement, the use requirement of the user is met, and the use experience of the user is improved.
As shown in fig. 12, as a fourth embodiment of the present application, a display apparatus 300 is disclosed, the display apparatus 300 including a driving circuit 200 and the display module 100 as described in the above embodiment, the driving circuit 200 driving the display module 100; in the display device 300 of the embodiment, whether the first electrode 140 and the second electrode 180 are electrified or not is used for controlling whether the liquid crystal molecules 161 in the liquid crystal portion 160 deflect or not, so as to control whether light rays can pass through the peep-proof structure 172 to be emitted into the display layer 120, so that the display module 100 can be switched between the peep-proof mode and the wide viewing angle mode, a user can switch between the peep-proof mode and the wide viewing angle mode according to own viewing requirements, the use requirements of the user are met, and the use experience of the user is improved.
It should be noted that, the limitation of each step in the present solution is not to be considered as limiting the sequence of steps on the premise of not affecting the implementation of the specific solution, and the steps written in the previous step may be executed before, or executed after, or even executed simultaneously, so long as the implementation of the present solution is possible, all the steps should be considered as falling within the protection scope of the present application.
The technical scheme of the application can be widely applied to various display panels, such as TN (Twisted Nematic) display panels, IPS (In-Plane Switching) display panels, VA (Vertical Alignment) display panels, MVA (Multi-Domain Vertical Alignment) display panels, and of course, other types of display panels, such as OLED (Organic Light-Emitting Diode) display panels, can be also applied to the scheme.
It should be noted that, the inventive concept of the present application can form a very large number of embodiments, but the application documents are limited in space and cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features can be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the original technical effects will be enhanced.
The above description of the application in connection with specific alternative embodiments is further detailed and it is not intended that the application be limited to the specific embodiments disclosed. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the application, and these should be considered to be within the scope of the application.

Claims (10)

1. The utility model provides a display module assembly, includes last polaroid, display layer and lower polaroid, go up the polaroid with lower polaroid sets up respectively the both sides of display layer, its characterized in that, display module assembly still includes:
the first electrode is arranged on one side of the lower polaroid, which is far away from the display layer;
the light adjusting layer is arranged on one side of the first electrode, far away from the lower polaroid, and comprises a liquid crystal part and a shading part which are arranged at intervals, wherein the shading part is obliquely arranged towards the side wall of the liquid crystal part, liquid crystal molecules are arranged in the liquid crystal part, the shading part comprises a light-transmitting matrix and a peep-proof structure arranged in the light-transmitting matrix, and the peep-proof structure shields light rays entering the peep-proof structure along the direction of the light-emitting surface of the display module; and
the second electrode is arranged on one side of the light adjusting layer away from the first electrode, and the first electrode and the second electrode form an electric field to control the liquid crystal molecules;
when the display module is in the peep-proof mode, the first electrode and the second electrode are not electrified, and the refractive index of the liquid crystal part is equal to that of the light-transmitting matrix; when the display module is in a wide view angle mode, the first electrode and the second electrode are electrified, and the refractive index of the liquid crystal part is unequal to the refractive index of the light-transmitting matrix.
2. The display module of claim 1, wherein the privacy structure comprises a plurality of light absorbing layers disposed in the light-transmitting substrate, the light absorbing layers are disposed at intervals, and the light absorbing layers and the light incident surface of the light adjusting layer are disposed obliquely.
3. The display module according to claim 2, wherein the light shielding portion further includes a glass substrate disposed between the light transmitting substrate and the liquid crystal portion;
wherein the refractive index of the glass matrix is the same as the refractive index of the light-transmitting matrix.
4. A display module according to claim 2 or 3, wherein two adjacent privacy structures are symmetrically arranged along the central axis of the liquid crystal portion.
5. The display module of claim 1, wherein the liquid crystal molecules include a vertical state and a horizontal state;
when the display module is in a peep-proof mode, the liquid crystal molecules are in a vertical state; when the display module is in a wide view angle mode, the liquid crystal molecules are in a horizontal state.
6. A display module according to claim 2 or 3, wherein the light absorption layer has an angle of 30-50 degrees with the light incident surface of the light adjustment layer.
7. The display module of claim 1, wherein a ratio of an area of the light shielding portion to an area of the liquid crystal portion is 1:1.
8. The display module of claim 2, wherein the light absorbing layer is made of any one of a light absorbing dye and a black body material, and the light transmitting substrate is made of glass.
9. A driving method for driving the display module according to any one of claims 1 to 8, comprising the steps of:
in the peep-proof mode, the first electrode and the second electrode are not electrified;
in the wide viewing angle mode, the first electrode and the second electrode are energized;
when the display module is in the peep-proof mode, the first electrode and the second electrode are not electrified, and the refractive index of the liquid crystal part is equal to that of the light-transmitting matrix; when the display module is in a wide view angle mode, the first electrode and the second electrode are electrified, and the refractive index of the liquid crystal part is unequal to the refractive index of the light-transmitting matrix.
10. A display device comprising a driving circuit and the display module according to any one of claims 1 to 8, wherein the driving circuit drives the display module.
CN202310949237.3A 2023-07-28 2023-07-28 Display module, driving method and display device Pending CN116859630A (en)

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