CN114942542A - Display device - Google Patents
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- CN114942542A CN114942542A CN202210563219.7A CN202210563219A CN114942542A CN 114942542 A CN114942542 A CN 114942542A CN 202210563219 A CN202210563219 A CN 202210563219A CN 114942542 A CN114942542 A CN 114942542A
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- emitting unit
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- display panel
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Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133621—Illuminating devices providing coloured light
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- 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
- G02F1/133553—Reflecting elements
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- 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
- G09G3/3406—Control of illumination source
Abstract
The present application provides a display device; the display device can realize a reflective display mode by arranging the reflecting layer and the filter layer in the reflecting area to reflect light; meanwhile, the backlight module is arranged and comprises three light sources emitting light rays with different colors, so that the display device can display through the backlight module in the transmission display mode under the control of the driving system, and the backlight module can emit the colored light rays without a color filter, so that the color gamut and the transmittance of the display device in the transmission display mode are improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display device.
Background
In order to realize color display, a transflective display device is designed in the conventional electronic reading device. As shown in fig. 1, in the transmissive display mode, light passes through a primary display panel, that is, light passes through a primary color filter, in the reflective display mode, light passes through a secondary display panel, that is, light passes through two color filters, which results in a large difference in display effect in different display modes.
Therefore, the conventional transflective display device has the technical problem that the color gamut is reduced in the transmissive display mode due to the fact that the color filter is thinned.
Disclosure of Invention
The embodiment of the application provides a display device, which is used for solving the technical problem that the color gamut of the existing transflective display device is reduced under a transmission display mode due to the fact that a color filter is thinned.
An embodiment of the present application provides a display device, which includes:
a display panel including a plurality of pixel units arranged in an array, the pixel units including a transmissive region and a reflective region;
the backlight module is arranged on one side of the display panel and at least comprises a first light-emitting unit for emitting light rays of a first color, a second light-emitting unit for emitting light rays of a second color and a third light-emitting unit for emitting light rays of a third color, wherein the first color, the second color and the third color are different in pairs;
the driving system is connected with the display panel and the backlight module and comprises an optical sensor, and the driving system is used for controlling the display panel and the backlight module according to signals of the optical sensor;
wherein, display panel includes first base plate, second base plate and set up in first base plate with liquid crystal layer between the second base plate the reflection zone, the liquid crystal layer is kept away from one side of second base plate is equipped with the reflection stratum, just the second base plate includes the filter layer, the filter layer is in projection on the first base plate with the reflection stratum is in there is the coincidence in projection on the first base plate.
In some embodiments, the filter layer is disposed in the reflective region, a distance exists between a side surface of the filter layer and an interface between the reflective region and the transmissive region, and a plane where any side surface of the filter layer is located in the reflective region.
In some embodiments, the first light emitting unit, the second light emitting unit, and the third light emitting unit are disposed corresponding to the pixel unit, and a projection of at least one of the first light emitting unit, the second light emitting unit, and the third light emitting unit on the display panel is located in the reflective region.
In some embodiments, the reflective layer includes a first surface and a second surface, the first surface and the second surface are disposed opposite to each other along a direction in which the backlight module faces the display panel, and both the first surface and the second surface are reflective surfaces.
In some embodiments, the first light emitting unit, the second light emitting unit, and the third light emitting unit are disposed at intervals, and a projection of the first light emitting unit on the display panel, a projection of the second light emitting unit on the display panel, and a projection of the third light emitting unit on the display panel are located in the transmissive region.
In some embodiments, the first substrate includes a driving circuit layer and a first electrode layer disposed on the driving circuit layer, and the reflective layer is disposed between the first electrode layer and the liquid crystal layer.
In some embodiments, the liquid crystal layer includes a liquid crystal monomer including
In some embodiments, when the signal sent by the light sensor is expressed as a transmissive display mode, the driving system is configured such that the driving frequencies of the display panel and the backlight module are the same, and the driving times of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are equal.
In some embodiments, when the signal transmitted by the light sensor is expressed as a transmissive display mode, the driving system is configured to provide a driving frequency to the backlight module that is greater than or equal to a first frequency, and the driving system is configured to sequentially transmit the driving signals of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit, where the first frequency is a frequency at which flicker does not occur in the display device.
In some embodiments, when the signal sent by the light sensor is expressed as a reflective display mode, the driving system is configured to provide the driving frequency to the display panel as a second frequency, the second frequency being less than the first frequency.
Has the advantages that: the present application provides a display device; the display device comprises a display panel, a backlight module and a driving system, wherein the display panel comprises a plurality of pixel units arranged in an array, and each pixel unit comprises a transmission area and a reflection area; the backlight module is arranged on one side of the display panel and at least comprises a first light-emitting unit for emitting light of a first color, a second light-emitting unit for emitting light of a second color and a third light-emitting unit for emitting light of a third color, wherein the first color, the second color and the third color are different in pairs; the driving system is connected with the display panel and the backlight module, the driving system comprises an optical sensor, and the driving system is used for controlling the display panel and the backlight module according to signals of the optical sensor; the display panel comprises a first substrate, a second substrate and a liquid crystal layer arranged between the first substrate and the second substrate, wherein a reflecting layer is arranged on one side, away from the second substrate, of the liquid crystal layer in the reflecting area, the second substrate comprises a filter layer, and the projection of the filter layer on the first substrate is overlapped with the projection of the reflecting layer on the first substrate. The reflective display mode can be realized by arranging the reflective layer and the filter layer in the reflective area to reflect light; meanwhile, the backlight module is arranged and comprises three light sources emitting light rays with different colors, so that the display device can display through the backlight module in the transmission display mode under the control of the driving system, and the backlight module can emit the colored light rays without a color filter, so that the color gamut and the transmittance of the display device in the transmission display mode are improved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a conventional transflective display device.
Fig. 2 is a schematic view of a display panel according to an embodiment of the present disclosure.
Fig. 3 is a first schematic view of a display device according to an embodiment of the present disclosure.
Fig. 4 is a second schematic diagram of a display device according to an embodiment of the present disclosure.
Fig. 5 is a timing diagram of a transmissive display mode of the display device according to the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.
As shown in fig. 1, the transflective display device includes a lower substrate 111, an upper substrate 132, and a liquid crystal 12 disposed between the lower substrate 111 and the upper substrate 132, wherein the lower substrate 111 is provided with a reflective layer 112 and an alignment layer 113, the upper substrate 132 is provided with a color filter 131, the transflective display device includes a transmissive region 141 and a reflective region 142, when the transflective display device is in a transmissive display mode, light 151 emitted by the display device directly exits the display device from the transmissive region 141, when the transflective display device is in a reflective display mode, external light 152 enters the reflective region 142 from the outside, and then the external light 152 is reflected by the reflective layer 112.
As can be seen from fig. 1, in the transmissive display mode, the light passes through the first display panel, that is, the light passes through the first color filter 131, and in the reflective display mode, the light passes through the second display panel, that is, the light passes through the second color filter 131, which results in a larger difference between the display effects in the different display modes. In order to solve the problem and satisfy the reflectivity in the reflective display mode, the conventional transflective display device may thin the color filter or reduce the color density of the color filter, but this may cause the color gamut in the transmissive display mode to be obviously reduced, i.e., the conventional transflective display device has a defect. Therefore, the conventional transflective display device has the technical problem that the color gamut is reduced in the transmissive display mode due to the fact that the color filter is thinned.
In view of the above technical problems, embodiments of the present application provide a display device to alleviate the above technical problems.
As shown in fig. 2, 3, and 4, an embodiment of the present application provides a display device, including:
a display panel 2 including a plurality of pixel units 20 arranged in an array, the pixel units 20 including a transmissive region 251 and a reflective region 252;
the backlight module 3 is disposed on one side of the display panel 2, and the backplane module 3 at least includes a first light-emitting unit 321 for emitting light of a first color, a second light-emitting unit 322 for emitting light of a second color, and a third light-emitting unit 323 for emitting light of a third color, where the first color, the second color, and the third color are different in pairs;
the driving system 5 is connected with the display panel 2 and the backlight module 3, the driving system 5 includes a light sensor 51, and the driving system 5 is configured to control the display panel 2 and the backlight module 3 according to a signal of the light sensor 51;
the display panel 2 includes a first substrate 21, a second substrate 24, and a liquid crystal layer 23 disposed between the first substrate 21 and the second substrate 24, the reflective region 252 is disposed on a side of the liquid crystal layer 23 away from the second substrate 24, where a reflective layer 22 is disposed on the side, where the reflective layer 22 is disposed, of the liquid crystal layer 23, and the second substrate 24 includes a filter layer 242, a projection of the filter layer 242 on the first substrate 21 coincides with a projection of the reflective layer 22 on the first substrate 21.
The embodiment of the application provides a display device, which can realize a reflective display mode by arranging a reflecting layer and a filter layer in a reflecting area to reflect light; meanwhile, the backlight module is arranged and comprises three light sources emitting light rays with different colors, so that the display device can display through the backlight module in the transmission display mode under the control of the driving system, and the backlight module can emit the colored light rays without a color filter, so that the color gamut and the transmittance of the display device in the transmission display mode are improved.
The problem that the color gamut of the transmission region is low is caused by the fact that the thickness of the color filter layer for the transmission region is thin. In one embodiment, as shown in fig. 3, the filter layer 242 is disposed in the reflective region 252, a distance exists between a side surface of the filter layer 242 and an interface between the reflective region 252 and the transmissive region 251, and a plane where any side surface of the filter layer 242 is located in the reflective region 252. The filter layer is arranged in the reflection area and cannot be arranged in the transmission area, so that the filter layer is prevented from influencing light rays of the transmission area.
Specifically, fig. 3 shows that the filter layer extends to the boundary between the reflective region and the transmissive region, but when the filter layer is disposed and there is a gap between the side surface of the reflective layer and the transmissive region, a gap may also exist between the filter layer and the interface between the reflective region and the transmissive region, so that the filter layer and the reflective layer are disposed correspondingly.
In one embodiment, as shown in fig. 3, the first light emitting unit 321, the second light emitting unit 322, and the third light emitting unit 323 are disposed corresponding to the pixel unit, and a projection of at least one of the first light emitting unit 321, the second light emitting unit 322, and the third light emitting unit 323 on the display panel is located in the reflective area 252 (a projection of the third light emitting unit 323 on the display panel is located in the reflective area 252 in fig. 3). The first light-emitting unit, the second light-emitting unit and the third light-emitting unit are arranged in the pixel unit, so that the pixel unit can emit light rays of various colors, and a transmission display mode is normally realized.
Specifically, as shown in fig. 3, the backlight module 3 includes a back plate 31 and a plurality of light emitting units 32 disposed on the back plate 31, each light emitting unit 32 is disposed corresponding to a pixel unit, each light emitting unit 32 includes a first light emitting unit 321, a second light emitting unit 322, and a third light emitting unit 323, and by disposing light emitting units emitting light of different colors in each pixel unit, each pixel unit can emit light of different colors without disposing a color filter, thereby improving the light transmittance and color gamut of the transmissive region.
Specifically, as shown in fig. 2, the pixel unit 20 includes a red sub-pixel 201, a green sub-pixel 202, and a blue sub-pixel 203, and the first light emitting unit, the second light emitting unit, and the third light emitting unit may be disposed corresponding to the red sub-pixel, the green sub-pixel, and the blue sub-pixel, respectively.
Specifically, as shown in fig. 3, the projection of the third light-emitting unit 323 disposed on the display panel is located in the reflective region 252, but since the light-emitting unit is disposed at a pixel level, the light of the third light-emitting unit can still be irradiated to the transmissive region, so that the transmissive region can realize the divergence of the light of each color, and the color gamut of the display panel is improved by the light-emitting units of different colors, without disposing a color filter, so as to improve the transmittance of the light.
Specifically, the first color is red, the second color is green, and the third color is blue. For example, the pixel unit of the display device is designed to be four sub-pixels, namely a red sub-pixel, a blue sub-pixel, a green sub-pixel and a white sub-pixel, and the backlight module can be correspondingly provided with the light emitting units emitting the light of the four colors, which is not described herein again.
The technical problem that light rays emitted by the backlight module irradiate the reflection area to cause light ray loss is solved by arranging the light emitting unit in the reflection area. In one embodiment, the reflective layer includes a first surface and a second surface, the first surface and the second surface are disposed opposite to each other along a direction of the backlight module facing the display panel, and both the first surface and the second surface are reflective surfaces. Through making along backlight unit towards the direction of display panel, two surfaces on reflection stratum are the plane of reflection, then can make the surface that is close to backlight unit one side with the light reflection of luminescence unit send out the display panel again behind the backlight unit, avoid light loss. The surface close to the outside is a reflecting surface, so that the external light can be reflected by the reflecting surface, and the reflective display mode is realized.
Specifically, when the projection of the light-emitting unit on the display panel is located in the reflection area, one side of the reflection layer close to the backlight module is a reflection surface, light emitted by the light-emitting unit to the reflection area can be reflected back to the backlight module by the reflection layer, then a film layer in the backlight module can be designed, so that the light reflected back to the backlight module is reflected to the transmission area of the display panel through the reflection area, and light loss is avoided.
The problem of light loss caused by the fact that the light-emitting unit is arranged in the reflecting area is solved. In one embodiment, the first light emitting unit, the second light emitting unit and the third light emitting unit are arranged at intervals, and a projection of the first light emitting unit on the display panel, a projection of the second light emitting unit on the display panel and a projection of the third light emitting unit on the display panel are located in the transmissive region. The projection of the first light-emitting unit on the display panel, the projection of the second light-emitting unit on the display panel and the projection of the third light-emitting unit on the display panel are all located in the transmission area, so that light rays emitted by the first light-emitting unit, the second light-emitting unit and the third light-emitting unit are emitted from the transmission area, and the light rays emitted by the first light-emitting unit, the second light-emitting unit and the third light-emitting unit are prevented from irradiating the reflection area to cause light loss.
The technical problem that the light is lost due to excessive contact between the external light and the film layer is solved. In one embodiment, as shown in fig. 3, the first substrate 21 includes a driving circuit layer and a first electrode layer 217 disposed on the driving circuit layer, and the reflective layer 22 is disposed between the first electrode layer 217 and the liquid crystal layer 23. Through setting up the reflection stratum between first electrode layer and liquid crystal layer, avoid external light and drive circuit layer to contact, lead to external light to be absorbed or shelter from, the loss appears, and external light can reflect under the control of liquid crystal, makes display device realize the reflection display mode.
Specifically, as shown in fig. 3, the first substrate 21 includes a first base 211, a gate electrode layer 212, a gate insulating layer 213, an active layer 214, a source drain layer 215, and a planarization layer 216, and each film layer in the first substrate 21 forms a driving circuit to drive the display panel, and as can be seen from fig. 3, a thin film transistor is shown in fig. 3, and liquid crystal deflection is controlled by the thin film transistor and an electrode, so that the display panel displays images.
As can be seen from fig. 3, the driving circuit controls the liquid crystals in the transmissive region and the reflective region to realize the transmissive display mode and the reflective display mode, and the setting position of the driving circuit may be set in the transmissive region (for example, as shown in fig. 3) or in the reflective region, so that, for the range of the transmissive region and the reflective region, except for the transmissive display portion, whether the driving circuit belongs to the transmissive region or the reflective region is not limited, and is determined according to the setting position of the driving circuit.
The liquid crystal display device aims at the technical problem that the response speed of the vertical alignment liquid crystal adopted in the existing display device is low. In one embodiment, as shown in FIG. 3, the liquid crystal layer 23 includes a liquid crystal monomer 231 including
Specifically, as shown in fig. 3, the liquid crystal layer 23 further includes a supporting pillar 232, and the liquid crystal layer is processed by the supporting pillar 232, so as to prevent the first substrate and the second substrate from being squeezed to damage the liquid crystal.
In one embodiment, the area of the light-transmitting region ranges from 10% to 60% of the area of the pixel unit.
In one embodiment, when the signal sent by the light sensor is expressed as a transmissive display mode, the driving system is configured such that the driving frequencies of the display panel and the backlight module are the same, and the driving times of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are equal. The driving frequency of the display panel is the same as that of the backlight module, so that when the display panel deflects liquid crystal, the backlight module can correspondingly control the light-emitting units to emit light, the display device normally displays the light, the driving time of the first light-emitting unit, the driving time of the second light-emitting unit and the driving time of the third light-emitting unit are equal, the light-emitting units can fully emit light, and poor display caused by too short time is avoided.
In one embodiment, when the light sensor sends a signal to indicate a transmissive display mode, the driving system is configured to provide a driving frequency to the backlight module that is greater than or equal to a first frequency, and the driving system is configured to sequentially send driving signals to the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit, where the first frequency is a frequency at which flicker does not occur in the display device. The driving system sequentially sends the driving signals of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit, the light-emitting units are sequentially driven to emit light, so that monochromatic light can be emitted, and the driving frequency of the backlight module is greater than or equal to the first frequency, so that when the mixed color light needs to be emitted, the display flicker cannot be perceived in human eyes due to the fact that the first frequency is large, and the light can still emit normally.
Specifically, first frequency is 180 Hz, and because the frequency that does not appear the scintillation when driving the luminescence unit simultaneously is 60 Hz, this application embodiment realizes monochromatic or colour mixture through driving different luminescence units in proper order and shows, makes first frequency be 180 Hz for the frequency of a display period of first luminescence unit, second luminescence unit and third luminescence unit is 60 Hz, avoids appearing the display scintillation, thereby improves the colour gamut of transmission display mode.
In one embodiment, when the signal transmitted by the light sensor is expressed as a reflective display mode, the driving system is configured to provide the driving frequency to the display panel as a second frequency, the second frequency being less than the first frequency. For the reflective display mode, because the backlight module is not needed to provide light, the driving frequency can be reduced, the power consumption of the display device is reduced, and the display flicker can still not appear due to the reduced frequency, so that the display is not influenced.
In particular, for example, the second frequency is 60 hz, the display device still does not flicker in the reflective display mode.
In one embodiment, as shown in fig. 3, the second substrate 24 further includes a second base 241, a second flat layer 243, and a second electrode layer 244.
Specifically, the first electrode layer is a pixel electrode layer, and the second electrode layer is a common electrode layer.
In one embodiment, as shown in fig. 3, the display panel further includes a first polarizer 41 and a second polarizer 42.
Specifically, the operation of the display device will be described by taking the display device of fig. 2 to 4 as an example. The operation of the transmissive display mode of the real device will be described with reference to the sequence of fig. 5 as an example.
The display device senses the change of the ambient light through the light sensor 51 in the driving system 5, and when the ambient light reaches a certain value (which can be set according to the requirement, for example, 10 lumens), the driving system controls the backlight module to be turned off, the driving frequency provided to the display panel by the driving system is 60 hz, and the display device is in the reflective display mode, and reflects the light through the reflective layer 22. When the ambient light brightness is lower than a certain value, the driving system is configured to provide a driving frequency of 180 Hz to the backlight module and sequentially send driving signals of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit. Taking the timing sequence of fig. 5 as an example, at this time, the display device needs to display red, therefore, the first light emitting unit is at a high potential during the first time period T1, the first light emitting unit emits red light, the second light emitting unit is kept at a low potential, the third light emitting unit is kept at a low potential, the first electrode layer in the display panel is at a high potential during the first time period T1, so that the display device displays red in the transmissive display mode, T1 is 5.7 milliseconds, and since the driving frequency is 180 hz in the transmissive display mode, the display device cannot distinguish between the two electrodes, and the display device displays normally.
The above embodiment has been described in detail by taking the example of the transmissive display mode emitting red light, and when it is required to emit light of other colors, the second light emitting cell may be at a high potential in the second period T2, the third light emitting cell may be at a high potential in the third period T3, and the corresponding first electrode layer may be at a high potential in the second period T2 and the third period T3, so that different images are displayed.
According to the above embodiment:
the embodiment of the application provides a display device; the display device comprises a display panel, a backlight module and a driving system, wherein the display panel comprises a plurality of pixel units arranged in an array, and each pixel unit comprises a transmission area and a reflection area; the backlight module is arranged on one side of the display panel and at least comprises a first light-emitting unit for emitting light of a first color, a second light-emitting unit for emitting light of a second color and a third light-emitting unit for emitting light of a third color, wherein the first color, the second color and the third color are different in pairs; the driving system is connected with the display panel and the backlight module, the driving system comprises an optical sensor, and the driving system is used for controlling the display panel and the backlight module according to signals of the optical sensor; the display panel comprises a first substrate, a second substrate and a liquid crystal layer arranged between the first substrate and the second substrate, wherein a reflecting layer is arranged on one side, away from the second substrate, of the liquid crystal layer in the reflecting area, the second substrate comprises a filter layer, and the projection of the filter layer on the first substrate is overlapped with the projection of the reflecting layer on the first substrate. The reflective display mode can be realized by arranging the reflective layer and the filter layer in the reflective area to reflect light; meanwhile, the backlight module is arranged and comprises three light sources emitting light rays with different colors, so that the display device can display through the backlight module in the transmission display mode under the control of the driving system, and the backlight module can emit the colored light rays without a color filter, so that the color gamut and the transmittance of the display device in the transmission display mode are improved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The display device provided by the embodiment of the present application is described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the above embodiment is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A display device, comprising:
a display panel including a plurality of pixel units arranged in an array, the pixel units including a transmissive region and a reflective region;
the backlight module is arranged on one side of the display panel and at least comprises a first light-emitting unit for emitting light rays of a first color, a second light-emitting unit for emitting light rays of a second color and a third light-emitting unit for emitting light rays of a third color, wherein the first color, the second color and the third color are different in pairs;
the driving system is connected with the display panel and the backlight module and comprises an optical sensor, and the driving system is used for controlling the display panel and the backlight module according to signals of the optical sensor;
the display panel comprises a first substrate, a second substrate and a liquid crystal layer arranged between the first substrate and the second substrate, the reflecting area is arranged on one side of the second substrate, the liquid crystal layer is far away from the reflecting layer, the second substrate comprises a filter layer, and the projection of the filter layer on the first substrate is coincided with the projection of the reflecting layer on the first substrate.
2. The display device according to claim 1, wherein the filter layer is provided in the reflective region, a side surface of the filter layer is spaced from an interface between the reflective region and the transmissive region, and a plane where either side surface of the filter layer is located in the reflective region.
3. The display device according to claim 1, wherein the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are provided corresponding to the pixel unit, and a projection of at least one of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit on the display panel is located in the reflective area.
4. The display device according to claim 3, wherein the reflective layer comprises a first surface and a second surface, the first surface and the second surface are disposed opposite to each other along a direction of the backlight module toward the display panel, and both the first surface and the second surface are reflective surfaces.
5. The display device according to claim 1, wherein the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are disposed at intervals, and a projection of the first light-emitting unit on the display panel, a projection of the second light-emitting unit on the display panel, and a projection of the third light-emitting unit on the display panel are located in the transmissive area.
6. The display device according to claim 1, wherein the first substrate includes a driving circuit layer and a first electrode layer disposed on the driving circuit layer, and wherein the reflective layer is disposed between the first electrode layer and the liquid crystal layer.
7. The display device of claim 1, wherein the liquid crystal layer comprises a liquid crystal monomer comprising
8. The display device as claimed in claim 1, wherein when the signal transmitted by the light sensor is expressed as a transmissive display mode, the driving system is configured such that the driving frequencies of the display panel and the backlight module are the same, and the driving time of the first light emitting unit, the second light emitting unit and the third light emitting unit is equal.
9. The display device as claimed in claim 8, wherein when the signal transmitted by the light sensor is expressed as a transmissive display mode, the driving system is configured to provide a driving frequency to the backlight module that is greater than or equal to a first frequency, and the driving system is configured to sequentially transmit the driving signals of the first light emitting unit, the second light emitting unit, and the third light emitting unit, the first frequency being a frequency at which flicker does not occur in the display device.
10. The display device of claim 9, wherein the drive system is configured to provide a drive frequency to the display panel at a second frequency when the signal sent by the light sensor is expressed as a reflective display mode, the second frequency being less than the first frequency.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116149099A (en) * | 2023-04-20 | 2023-05-23 | 惠科股份有限公司 | Backlight module and display device |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1109053A2 (en) * | 1999-12-13 | 2001-06-20 | Sony Corporation | Display apparatus with colour filter and method of manufacturing the same |
| US20030053013A1 (en) * | 2001-05-17 | 2003-03-20 | Tomio Tanaka | Color liquid crystal display device |
| CN1991497A (en) * | 2005-12-26 | 2007-07-04 | 财团法人工业技术研究院 | Semi-penetrating and semi-reflecting LCD panel, colorful filter and method for manufacturing same |
| CN101153980A (en) * | 2006-09-29 | 2008-04-02 | 群康科技(深圳)有限公司 | Semi-penetration semi-reflection liquid crystal display device |
| JP2008203334A (en) * | 2007-02-16 | 2008-09-04 | Toshiba Matsushita Display Technology Co Ltd | Display element and display device |
| US20090015770A1 (en) * | 2006-03-20 | 2009-01-15 | Akiko Ito | Display device |
| CN101398549A (en) * | 2007-09-28 | 2009-04-01 | 群康科技(深圳)有限公司 | Liquid crystal display device and driving method thereof |
| CN101576679A (en) * | 2008-05-09 | 2009-11-11 | 群康科技(深圳)有限公司 | Semi-transmitting semi-reflecting liquid crystal display panel and semi-transmitting semi-reflecting liquid crystal display |
| US20120113367A1 (en) * | 2009-06-30 | 2012-05-10 | Stephen Kitson | Full-color reflective display |
| CN104199213A (en) * | 2014-08-18 | 2014-12-10 | 京东方科技集团股份有限公司 | Transflective liquid crystal display panel and liquid crystal display |
| US20150002796A1 (en) * | 2013-06-28 | 2015-01-01 | Japan Display Inc. | Transflective liquid crystal display device and electronic apparatus |
| CN113035141A (en) * | 2021-03-19 | 2021-06-25 | 维沃移动通信有限公司 | Display screen, display screen driving method and device, electronic equipment and storage medium |
| CN113741096A (en) * | 2021-08-31 | 2021-12-03 | 惠科股份有限公司 | Double-sided display panel |
| CN114415415A (en) * | 2022-02-07 | 2022-04-29 | Tcl华星光电技术有限公司 | Display module and mobile terminal |
-
2022
- 2022-05-19 CN CN202210563219.7A patent/CN114942542B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1109053A2 (en) * | 1999-12-13 | 2001-06-20 | Sony Corporation | Display apparatus with colour filter and method of manufacturing the same |
| US20030053013A1 (en) * | 2001-05-17 | 2003-03-20 | Tomio Tanaka | Color liquid crystal display device |
| CN1991497A (en) * | 2005-12-26 | 2007-07-04 | 财团法人工业技术研究院 | Semi-penetrating and semi-reflecting LCD panel, colorful filter and method for manufacturing same |
| US20090015770A1 (en) * | 2006-03-20 | 2009-01-15 | Akiko Ito | Display device |
| CN101153980A (en) * | 2006-09-29 | 2008-04-02 | 群康科技(深圳)有限公司 | Semi-penetration semi-reflection liquid crystal display device |
| JP2008203334A (en) * | 2007-02-16 | 2008-09-04 | Toshiba Matsushita Display Technology Co Ltd | Display element and display device |
| CN101398549A (en) * | 2007-09-28 | 2009-04-01 | 群康科技(深圳)有限公司 | Liquid crystal display device and driving method thereof |
| CN101576679A (en) * | 2008-05-09 | 2009-11-11 | 群康科技(深圳)有限公司 | Semi-transmitting semi-reflecting liquid crystal display panel and semi-transmitting semi-reflecting liquid crystal display |
| US20120113367A1 (en) * | 2009-06-30 | 2012-05-10 | Stephen Kitson | Full-color reflective display |
| US20150002796A1 (en) * | 2013-06-28 | 2015-01-01 | Japan Display Inc. | Transflective liquid crystal display device and electronic apparatus |
| CN104199213A (en) * | 2014-08-18 | 2014-12-10 | 京东方科技集团股份有限公司 | Transflective liquid crystal display panel and liquid crystal display |
| CN113035141A (en) * | 2021-03-19 | 2021-06-25 | 维沃移动通信有限公司 | Display screen, display screen driving method and device, electronic equipment and storage medium |
| CN113741096A (en) * | 2021-08-31 | 2021-12-03 | 惠科股份有限公司 | Double-sided display panel |
| CN114415415A (en) * | 2022-02-07 | 2022-04-29 | Tcl华星光电技术有限公司 | Display module and mobile terminal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116149099A (en) * | 2023-04-20 | 2023-05-23 | 惠科股份有限公司 | Backlight module and display device |
| CN116149099B (en) * | 2023-04-20 | 2023-08-08 | 惠科股份有限公司 | Backlight module and display device |
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| Publication number | Publication date |
|---|---|
| CN114942542B (en) | 2024-02-20 |
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