CN117631372A - Reflection type low-power consumption display device and electronic equipment - Google Patents

Reflection type low-power consumption display device and electronic equipment Download PDF

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Publication number
CN117631372A
CN117631372A CN202311673843.3A CN202311673843A CN117631372A CN 117631372 A CN117631372 A CN 117631372A CN 202311673843 A CN202311673843 A CN 202311673843A CN 117631372 A CN117631372 A CN 117631372A
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China
Prior art keywords
light
backlight
layer
semi
display device
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Pending
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CN202311673843.3A
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Chinese (zh)
Inventor
陈文锋
郭金明
朱晓清
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Shenzhen Easyquick Ltd By Share Ltd
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Shenzhen Easyquick Ltd By Share Ltd
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Priority to CN202311673843.3A priority Critical patent/CN117631372A/en
Publication of CN117631372A publication Critical patent/CN117631372A/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
    • G02F1/133—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
    • G02F1/133618—Illuminating devices for ambient 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133612—Electrical details
    • 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

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention discloses a reflection type low-power consumption display device and electronic equipment, and relates to the technical field of display screen design. Wherein, reflection type low power consumption display device includes: the backlight module comprises a first light-transmitting layer, a semi-reflecting layer, a second light-transmitting layer, a backlight luminous piece and a backlight control circuit. The backlight light emitting member generates backlight, and the backlight sequentially passes through the second light-transmitting layer, the semi-reflecting layer and the first light-transmitting layer to be emitted out of the display device. The backlight control circuit detects the illumination intensity of the ambient light and generates a backlight control signal so as to switch the luminous intensity of the backlight luminous element. The reflective low-power consumption display device of the embodiment can reduce the power consumption of the display device by reducing the luminous intensity of the backlight luminous element in the display device under the condition that the illumination intensity of the ambient light is higher.

Description

Reflection type low-power consumption display device and electronic equipment
Technical Field
The invention relates to the technical field of display screen design, in particular to a reflection type low-power consumption display device and electronic equipment.
Background
Currently, display screens such as liquid crystal display screens provide a light source for illumination through a built-in backlight.
In the related art, when the brightness of the ambient light is low, the power consumption of the display screen is normal. Under the condition of high ambient light, the luminous intensity of the backlight luminous element in the display screen needs to be improved, so that the display content of the display screen is ensured to be clear. However, increasing the light emission intensity of the backlight light emitting member may cause excessive power consumption of the display screen, and the power consumption of the display screen may increase with an increase in the ambient light brightness. Therefore, how to provide a display device to reduce the power consumption of the display device caused by the ambient light is a technical problem to be solved.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a reflective low-power-consumption display device, which can reduce the power consumption of the display device caused by ambient light.
The invention also provides electronic equipment with the reflection type low-power-consumption display device.
According to an embodiment of the first aspect of the present invention, a reflective low power consumption display device includes:
a first light-transmitting layer, one side of which is used for receiving ambient light;
the semi-reflecting layer is arranged on the other side of the first light-transmitting layer;
the second light-transmitting layer is arranged on one side of the semi-reflecting layer away from the first light-transmitting layer;
the backlight luminous piece is arranged on one side, far away from the semi-reflecting layer, of the second light-transmitting layer, the luminous side of the backlight luminous piece faces the second light-transmitting layer, and the backlight luminous piece is used for generating backlight; wherein the semi-reflective layer is configured to reflect the ambient light, the semi-reflective layer is further configured to transmit the backlight;
the backlight control circuit is electrically connected with the backlight luminous piece and is used for generating a backlight control signal according to the illumination intensity of the ambient light; the backlight luminous piece is used for adjusting luminous intensity according to the backlight control signal.
The reflective low-power-consumption display device provided by the embodiment of the invention has at least the following beneficial effects: ambient light enters the first light-transmitting layer from the outside and reaches the semi-reflective layer after passing through the first light-transmitting layer. The semi-reflective layer reflects ambient light to reflect the ambient light from the first light transmissive layer out of the display device. The backlight luminous piece generates backlight, and the backlight sequentially passes through the second light-transmitting layer, the semi-reflecting layer and the first light-transmitting layer so as to be emitted out of the display device. The backlight control circuit detects the illumination intensity of the ambient light and generates a backlight control signal so as to switch the luminous intensity of the backlight luminous element. The display device of the embodiment reflects the incident ambient light through the semi-reflective layer, thereby utilizing the ambient light as an auxiliary light source, and controlling the luminous intensity of the backlight luminous element through the backlight control circuit according to the illumination intensity of the ambient light, so that the luminous intensity of the backlight luminous element in the display device is lower under the condition that the illumination intensity of the ambient light is higher, thereby reducing the power consumption of the display device.
According to some embodiments of the invention, the backlight control circuit comprises:
the light sensing module is used for generating a light intensity sensing signal according to the illumination intensity of the ambient light;
the main control module is respectively and electrically connected with the light sensing module and the backlight luminous piece, and is used for generating the backlight control signal according to the light intensity sensing signal.
According to some embodiments of the invention, the master control module comprises:
the main control unit is electrically connected with the light sensing module and is used for generating an initial control signal according to the light intensity sensing signal;
the driving unit is respectively and electrically connected with the main control unit and the backlight luminous piece, and is used for performing variable-voltage driving operation on the initial control signal to obtain the backlight control signal.
According to some embodiments of the invention, the light sensing module comprises a light sensing sensor, the main control unit comprises a main control chip, the driving unit comprises a driving chip, the main control chip is respectively and electrically connected with the light sensing sensor and the driving chip, and the driving chip is also electrically connected with the backlight luminous element; the light induction sensor is used for generating a light intensity induction signal according to the illumination intensity of the ambient light; the main control module is used for generating an initial control signal according to the light intensity induction signal; the driving unit is used for performing variable-voltage driving operation on the initial control signal to obtain the backlight control signal.
According to some embodiments of the invention, the photo-sensor is of the type Si1132.
According to some embodiments of the invention, the driver chip is TPS61500.
According to some embodiments of the invention, the apparatus further comprises:
the liquid crystal layer is arranged between the first light-transmitting layer and the semi-reflecting layer and is used for adjusting the light of the ambient light and/or the backlight.
According to some embodiments of the invention, the apparatus further comprises:
the deflection control layer is arranged between the liquid crystal layer and the semi-reflecting layer, and the semi-reflecting layer is used for controlling the liquid crystal layer to deflect liquid crystal.
According to some embodiments of the invention, the apparatus further comprises:
the color filter layer is arranged between the first light-transmitting layer and the liquid crystal layer, and is used for carrying out color filter operation on the ambient light and/or the backlight.
An electronic device according to an embodiment of the second aspect of the present invention includes:
according to the reflective low-power consumption display device of the embodiment of the first aspect of the invention.
The electronic equipment provided by the embodiment of the invention has at least the following beneficial effects: the electronic equipment reduces the power consumption of the display device by adopting the reflection type low-power-consumption display device.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a reflective low power display device according to an embodiment of the invention;
FIG. 2 is a block diagram of a backlight control circuit according to an embodiment of the invention;
FIG. 3 is a block diagram of another embodiment of a backlight control circuit according to an embodiment of the present invention;
FIG. 4 is a schematic circuit diagram of an embodiment of a photo-sensing module according to the present invention;
FIG. 5 is a schematic circuit diagram of a master control unit according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a driving unit according to an embodiment of the present invention.
Reference numerals:
the light emitting device comprises a first light transmitting layer 100, a semi-reflecting layer 200, a second light transmitting layer 300, a backlight light emitting member 400, a liquid crystal layer 500, a deflection control layer 600, a color filter layer 700, a light sensing module 810, a main control module 820, a main control unit 821 and a driving unit 822.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the description of the present invention, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in fig. 1, an embodiment of the present invention provides a reflective low power consumption display device, including: the light emitting device comprises a first light transmitting layer 100, a semi-reflecting layer 200, a second light transmitting layer 300, a backlight light emitting piece 400 and a backlight control circuit. One side of the first light-transmitting layer 100 is for receiving ambient light; the semi-reflective layer 200 is disposed on the other side of the first transparent layer 100; the second light-transmitting layer 300 is disposed on a side of the semi-reflective layer 200 away from the first light-transmitting layer 100; the backlight light-emitting member 400 is disposed on a side of the second light-transmitting layer 300 away from the semi-reflective layer 200, and a light-emitting side of the backlight light-emitting member 400 faces the second light-transmitting layer 300, wherein the backlight light-emitting member 400 is configured to generate backlight; wherein the semi-reflective layer 200 is used for reflecting ambient light, and the semi-reflective layer 200 is also used for transmitting backlight light; the backlight control circuit is electrically connected with the backlight luminous element 400, and is used for generating a backlight control signal according to the illumination intensity of the ambient light; the backlight light-emitting member 400 is used for adjusting the light-emitting intensity according to the backlight control signal.
Specifically, the first light-transmitting layer 100 is disposed at the top end of the display device, and the ambient light a generated by the ambient light source X is incident into the display device from the upper surface of the first light-transmitting layer 100. The ambient light a may be direct light, reflected light, or mixed light of a light source such as sunlight.
The semi-reflective layer 200 is disposed on one side under the first light-transmitting layer 100. Ambient light a is transmitted through the first light-transmitting layer 100 from the upper surface to the upper surface of the semi-reflective layer 200. The semi-reflective layer 200 has a function of reflecting light from one surface and transmitting light from the other surface, that is, the semi-reflective layer 200 can reflect the ambient light a on one side above it, so that the ambient light a is transmitted from the lower surface through the first light-transmitting layer 100 and exits from the upper surface of the first light-transmitting layer 100. By providing the reflection effect of the semi-reflective layer 200 on the ambient light a, the ambient light a can be used as an auxiliary light source of the display device.
The lower side of the semi-reflective layer 200 is sequentially provided with a second light-transmitting layer 300 and a backlight light-emitting member 400, and the light-emitting side of the backlight light-emitting member 400 is disposed towards the second light-transmitting layer 300. The backlight emitting member 400 is capable of emitting backlight B from the light emitting side, the backlight B being transmitted from the lower surface through the second light transmitting layer 300 to the lower surface of the semi-reflective layer 200. Since the lower surface of the semi-reflective layer 200 can transmit light, the backlight B can transmit through the semi-reflective layer 200. After passing through the semi-reflective layer 200, the backlight B is transmitted through the first light-transmitting layer 100 from the lower surface and exits from the upper surface of the first light-transmitting layer 100.
The backlight emitting member 400 is electrically connected to the backlight control circuit. The backlight control circuit detects the illumination intensity of the ambient light A, so as to generate a backlight control signal in real time. The backlight luminous element 400 adjusts its luminous intensity in real time according to the backlight control signal after receiving the backlight control signal. Wherein, the illumination intensity of the ambient light a is increased, and the luminous intensity of the backlight luminous element 400 is correspondingly reduced; conversely, the illumination intensity of the ambient light a decreases, and the luminous intensity of the backlight luminous element 400 correspondingly increases. If the illumination intensity of the ambient light a is higher than the preset value, the light emitting intensity of the backlight light emitting member 400 may be reduced to zero, i.e. the backlight light emitting member 400 stops emitting light.
According to the reflective low-power-consumption display device of the embodiment of the invention, the incident ambient light is reflected by the semi-reflective layer 200, the ambient light is used as an auxiliary light source, and the light-emitting intensity of the backlight light-emitting member 400 is controlled by the backlight control circuit according to the illumination intensity of the ambient light, so that the light-emitting intensity of the backlight light-emitting member 400 in the display device is lower when the illumination intensity of the ambient light is higher, and the power consumption of the display device is reduced. Meanwhile, the power consumption of the display device under the condition of high illumination intensity is reduced, so that the heat dissipation problem of the display device can be solved, and the product life of the display device can be prolonged.
As shown in fig. 1, in some embodiments of the present invention, the display device further includes a liquid crystal layer 500. The liquid crystal layer 500 is disposed between the first light-transmitting layer 100 and the semi-reflective layer 200, and the liquid crystal layer 500 is used for adjusting light of ambient light and/or backlight.
Specifically, the liquid crystal layer 500 is disposed on a side below the first light-transmitting layer 100 and on a side above the semi-reflective layer 200. The liquid crystal layer 500 is composed of a liquid crystal material. When no electric field is applied, the liquid crystal molecules in the liquid crystal layer 500 are arranged randomly, so that light cannot pass through the liquid crystal layer, and the display image of the display device is black. When an electric field acts on the liquid crystal molecules, the arrangement mode of the liquid crystal molecules is changed, the ambient light a and the backlight B can pass through the liquid crystal layer 500, and the liquid crystal layer 500 can respectively adjust the ambient light a and the backlight B transmitted through, so that a display picture of the display device can show corresponding brightness and color.
As shown in fig. 1, in some embodiments of the present invention, the display device further includes a deflection control layer 600. The deflection control layer 600 is disposed between the liquid crystal layer 500 and the semi-reflective layer 200, and the semi-reflective layer 200 is used for controlling the liquid crystal layer 500 to deflect the liquid crystal.
Specifically, the deflection control layer 600 is disposed at the bottom side of the liquid crystal layer 500. The deflection control layer 600 changes the arrangement of liquid crystal molecules in the liquid crystal layer 500 by changing the deflection electric field to the liquid crystal layer 500, thereby adjusting the light transmission capability of the liquid crystal layer 500 and adjusting the brightness and color of light.
As shown in fig. 1, in some embodiments of the present invention, the display device further includes a color filter layer 700. The color filter layer 700 is disposed between the first transparent layer 100 and the liquid crystal layer 500, and the color filter layer 700 is used for performing color filtering operation on ambient light and/or backlight.
Specifically, the first light-transmitting layer 100 and the liquid crystal layer 500 are provided with a color filter layer 700, and both ambient light a and backlight B can be transmitted through the color filter layer 700. When the ambient light a and the backlight B pass through the color filter layer 700, the color filter layer 700 performs color filtering on the ambient light a and the backlight B, respectively, thereby changing the presentation colors of the ambient light a and the backlight B.
As shown in fig. 2, in some embodiments of the present invention, a backlight control circuit includes: light sensing module 810, main control module 820. The light sensing module 810 is configured to generate a light intensity sensing signal according to an illumination intensity of ambient light; the main control module 820 is electrically connected with the light sensing module 810 and the backlight light emitting member 400, respectively, and the main control module 820 is used for generating a backlight control signal according to the light intensity sensing signal.
Specifically, the light sensing module 810 is capable of receiving ambient light, generating a light intensity sensing signal according to illumination intensity of the ambient light, and changing a current value of the light intensity sensing signal in real time according to a change of the illumination intensity. The light sensing module 810 and the backlight luminous element 400 are electrically connected with the main control module 820, the main control module 820 generates a backlight control signal after receiving the light intensity sensing signal, and the current value of the backlight control signal is changed in real time according to the current value of the light intensity sensing signal, so that the luminous intensity of the backlight luminous element 400 is changed. For example, when the illumination intensity of the ambient light becomes high, the main control module 820 decreases the voltage value of the backlight control signal, thereby decreasing the light emitting intensity of the backlight light emitting member 400.
As shown in fig. 3, in some embodiments of the present invention, the main control module 820 includes: a main control unit 821 and a driving unit 822. The main control unit 821 is electrically connected with the light sensing module 810, and the main control module 820 is used for generating an initial control signal according to the light intensity sensing signal; the driving unit 822 is electrically connected to the main control unit 821 and the backlight light emitting member 400, respectively, and the driving unit 822 is used for performing a variable-voltage driving operation on the initial control signal to obtain a backlight control signal.
Specifically, the main control unit 821 is electrically connected to the light sensing module 810 and the driving unit 822, and the backlight light emitting member 400 is electrically connected to the driving unit 822. After receiving the light intensity sensing signal, the main control module 820 generates an initial control signal according to the light intensity sensing signal and adjusts the voltage value of the initial control signal in real time. The driving unit 822 performs variable-voltage driving adjustment on the initial control signal to adapt to the working voltage of the backlight light emitting member 400, thereby obtaining a backlight control signal. The backlight luminous member 400 adjusts its luminous intensity in real time according to the backlight control signal.
As shown in fig. 4, 5 and 6, in some embodiments of the present invention, the light sensing module 810 includes a light sensing sensor J1, the main control unit 821 includes a main control chip J2, the driving unit 822 includes a driving chip J3, the main control chip J2 is electrically connected to the light sensing sensor J1 and the driving chip J3, and the driving chip J3 is further electrically connected to the backlight light emitting member 400. The light induction sensor J1 is used for generating a light intensity induction signal according to the illumination intensity of ambient light; the main control module 820 is used for generating an initial control signal according to the light intensity sensing signal; the driving unit 822 is used for performing variable-voltage driving operation on the initial control signal to obtain a backlight control signal.
Specifically, the photo-sensing sensor J1 is electrically connected to the "PB7" pin and the "PB6" pin of the main control chip J2 through the "SDA" pin and the "SCL" pin, the driving chip J3 is electrically connected to the "PA14/SWCLK" pin of the main control chip J2 through the "EN" pin, and the backlight light emitting member 400 is electrically connected to the "SW" pin of the driving chip J3. The light induction sensor J1 detects the illumination intensity of ambient light, generates a light intensity induction signal through an 'SDA' pin and an 'SCL' pin, and simultaneously changes the voltage value of the light intensity induction signal in real time according to the change of the illumination intensity. The main control chip J2 receives the light intensity induction signal from the PB7 pin and the PB6 pin, and generates an initial control signal through the PA14/SWCLK pin, so that the voltage value of the initial control signal is changed in real time according to the voltage value of the light intensity induction signal. The driving chip J3 receives the initial control signal through the "EN" pin and generates the backlight control signal through the "SW" pin to control the light emitting intensity of the backlight light emitting member 400.
In some embodiments of the invention, photo-sensor J1 is model Si1132.
In some embodiments of the present invention, the driver chip J3 is model number TPS61500.
In a specific embodiment, taking a 10.1 inch lcd screen as an example, the backlight light emitting member 400 of the lcd screen is 24 LEDs, and the operation power consumption of the lcd screen 24 hours a day in an outdoor environment is simulated and tested. In an environment where sufficient sunlight is irradiated for 12 hours in the daytime, the power consumption of the backlight light-emitting member 400 of the display device is 0, and the power consumption of other circuit modules (such as an IC chip) is 1.98W. In an environment without sunlight irradiation at night for 12 hours, the power consumption of the backlight luminous element 400 of the display device is 8.64W, and the power consumption of other circuit modules is 1.98W. Therefore, the display device of the embodiment can effectively reduce the power consumption under the condition of high illumination intensity.
The embodiment of the invention also provides electronic equipment, which comprises the reflective low-power-consumption display device described in any embodiment.
Therefore, the content in the embodiments of the reflective low-power-consumption display device is applicable to the embodiments of the electronic device, and the functions specifically realized by the embodiments of the electronic device are the same as those of the embodiments of the reflective low-power-consumption display device, and the beneficial effects achieved by the embodiments of the reflective low-power-consumption display device are the same as those achieved by the embodiments of the reflective low-power-consumption display device.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. A reflective low power display device comprising:
a first light-transmitting layer, one side of which is used for receiving ambient light;
the semi-reflecting layer is arranged on the other side of the first light-transmitting layer;
the second light-transmitting layer is arranged on one side of the semi-reflecting layer away from the first light-transmitting layer;
the backlight luminous piece is arranged on one side, far away from the semi-reflecting layer, of the second light-transmitting layer, the luminous side of the backlight luminous piece faces the second light-transmitting layer, and the backlight luminous piece is used for generating backlight; wherein the semi-reflective layer is configured to reflect the ambient light, the semi-reflective layer is further configured to transmit the backlight;
the backlight control circuit is electrically connected with the backlight luminous piece and is used for generating a backlight control signal according to the illumination intensity of the ambient light; the backlight luminous piece is used for adjusting luminous intensity according to the backlight control signal.
2. The apparatus of claim 1, wherein the backlight control circuit comprises:
the light sensing module is used for generating a light intensity sensing signal according to the illumination intensity of the ambient light;
the main control module is respectively and electrically connected with the light sensing module and the backlight luminous piece, and is used for generating the backlight control signal according to the light intensity sensing signal.
3. The apparatus of claim 2, wherein the master control module comprises:
the main control unit is electrically connected with the light sensing module and is used for generating an initial control signal according to the light intensity sensing signal;
the driving unit is respectively and electrically connected with the main control unit and the backlight luminous piece, and is used for performing variable-voltage driving operation on the initial control signal to obtain the backlight control signal.
4. The device of claim 3, wherein the light sensing module comprises a light sensing sensor, the master control unit comprises a master control chip, the driving unit comprises a driving chip, the master control chip is respectively and electrically connected with the light sensing sensor and the driving chip, and the driving chip is also electrically connected with the backlight luminous element; the light induction sensor is used for generating a light intensity induction signal according to the illumination intensity of the ambient light; the main control module is used for generating an initial control signal according to the light intensity induction signal; the driving unit is used for performing variable-voltage driving operation on the initial control signal to obtain the backlight control signal.
5. The device of claim 4, wherein the photo-sensor is Si1132 in type.
6. The device of claim 4, wherein the driver chip is TPS61500.
7. The apparatus according to any one of claims 1 to 6, further comprising:
the liquid crystal layer is arranged between the first light-transmitting layer and the semi-reflecting layer and is used for adjusting the light of the ambient light and/or the backlight.
8. The apparatus as recited in claim 7, further comprising:
the deflection control layer is arranged between the liquid crystal layer and the semi-reflecting layer, and the semi-reflecting layer is used for controlling the liquid crystal layer to deflect liquid crystal.
9. The apparatus as recited in claim 8, further comprising:
the color filter layer is arranged between the first light-transmitting layer and the liquid crystal layer, and is used for carrying out color filter operation on the ambient light and/or the backlight.
10. An electronic device, comprising:
the reflective low power consumption display device of any one of claims 1 to 9.
CN202311673843.3A 2023-12-06 2023-12-06 Reflection type low-power consumption display device and electronic equipment Pending CN117631372A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311673843.3A CN117631372A (en) 2023-12-06 2023-12-06 Reflection type low-power consumption display device and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311673843.3A CN117631372A (en) 2023-12-06 2023-12-06 Reflection type low-power consumption display device and electronic equipment

Publications (1)

Publication Number Publication Date
CN117631372A true CN117631372A (en) 2024-03-01

Family

ID=90018094

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311673843.3A Pending CN117631372A (en) 2023-12-06 2023-12-06 Reflection type low-power consumption display device and electronic equipment

Country Status (1)

Country Link
CN (1) CN117631372A (en)

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