CN108803131B - Screen, screen backlight control method and device - Google Patents
Screen, screen backlight control method and device Download PDFInfo
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- CN108803131B CN108803131B CN201710282141.0A CN201710282141A CN108803131B CN 108803131 B CN108803131 B CN 108803131B CN 201710282141 A CN201710282141 A CN 201710282141A CN 108803131 B CN108803131 B CN 108803131B
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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
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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
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Liquid Crystal Display Device Control (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The disclosure discloses a screen, a screen backlight control method and a screen backlight control device, and belongs to the technical field of liquid crystal display. The method comprises the following steps: and detecting whether a fingerprint acquisition unit in the screen is in an acquisition working state, if so, controlling the first backlight area not to emit backlight and controlling at least one second backlight area in the n second backlight areas to emit backlight. According to the display chip, when the fingerprint is collected, only the backlight of the area where the fingerprint collecting unit is located needs to be closed, the condition that the current LCD cannot display information due to the fact that the whole LCD is closed in a backlight mode is avoided, so that the display chip can perform backlight partition control on the backlight of a screen, and the LCD can display partial information.
Description
Technical Field
The disclosure relates to the technical field of liquid crystal display, and in particular to a screen, and a screen backlight control method and device.
Background
Electronic devices are often equipped with liquid crystal displays that include a liquid crystal layer for displaying information and a backlight layer for providing backlight to the liquid crystal layer.
At present, the application of fingerprint identification technology to electronic equipment is more and more extensive, and if an optical fingerprint sensor is configured on the electronic equipment, the electronic equipment can perform fingerprint collection on the finger of a user based on the refraction and reflection principle of light through the optical fingerprint sensor.
Since backlight light emission of an LCD (Liquid Crystal Display) may affect fingerprint acquisition performance of the optical fingerprint sensor, the backlight of the entire LCD needs to be turned off when fingerprint acquisition is performed. However, when the electronic device turns off the backlight of the entire LCD, the current LCD cannot display information. At present, an effective screen backlight control method in fingerprint collection is not provided.
Disclosure of Invention
In order to solve the problem that the current LCD cannot display information due to the fact that the backlight of the whole LCD is turned off when fingerprints are collected, the disclosure provides a screen, and a screen backlight control method and device. The technical scheme is as follows:
according to a first aspect of embodiments of the present disclosure, there is provided a screen comprising: the fingerprint acquisition unit comprises a first backlight area and n second backlight areas, wherein the first backlight area is an area where the fingerprint acquisition unit is located, and backlight control of the first backlight area and the backlight control of the n second backlight areas are mutually independent;
each second backlight area in the n second backlight areas is not intersected with the first backlight area, the union of the n second backlight areas and the first backlight area is the whole backlight area of the screen, and n is a positive integer.
Optionally, the shape of the first backlight area is at least one of a rectangle, a triangle, a trapezoid and a semicircular arch; and/or at least one of the n second backlight regions has at least one of a rectangular shape, a triangular shape, a trapezoidal shape and a semicircular arch shape.
Optionally, the first backlight region is rectangular, and each of the n second backlight regions is rectangular; all backlight areas of the screen comprise M × N backlight areas, wherein M is the number of backlight areas in the vertical direction, N is the number of backlight areas in the horizontal direction, and M × N is N + 1; the first backlight region is one of the M x N backlight regions, and the N second backlight regions are N backlight regions except the first backlight region.
Optionally, the first backlight region is triangular, and each of the n second backlight regions is triangular; there is a point in each second backlight region where at least one edge intersects with at least one edge corresponding to the first backlight region in the screen.
Optionally, areas of any two of the n second backlight regions and the first backlight region are equal, or areas of at least two of the n second backlight regions and the first backlight region are unequal.
According to a second aspect of the embodiments of the present disclosure, there is provided a screen backlight control method for use in a screen including a first backlight region and n second backlight regions, the method including:
detecting whether a fingerprint acquisition unit positioned in a screen is in an acquisition working state;
if the fingerprint acquisition unit is in an acquisition working state, controlling the first backlight area not to emit backlight, and controlling at least one second backlight area in the n second backlight areas to emit backlight;
the first backlight area is an area where the fingerprint acquisition unit is located, backlight control of the first backlight area and backlight control of the n second backlight areas are mutually independent, and n is a positive integer.
Optionally, detecting whether the fingerprint acquisition unit located in the screen is in the acquisition working state includes:
monitoring light ray information in real time through a fingerprint acquisition unit, wherein the light ray information is used for indicating the light ray condition of the position of the fingerprint acquisition unit;
and determining whether the fingerprint acquisition unit is in an acquisition working state or not according to the light information.
Optionally, detecting whether the fingerprint acquisition unit located in the screen is in the acquisition working state includes:
detecting whether a screen receives a pressing operation through a pressure sensor;
if the pressing operation is received, the fingerprint acquisition unit is triggered to start monitoring light information, whether the fingerprint acquisition unit is in an acquisition working state or not is determined according to the optical fiber information, and the light information is used for indicating the light condition of the position of the fingerprint acquisition unit.
According to a third aspect of the embodiments of the present disclosure, there is provided a screen backlight control device, the device including:
the detection module is configured to detect whether a fingerprint acquisition unit positioned in a screen is in an acquisition working state;
the display chip is configured to control the first backlight area not to emit backlight and control at least one second backlight area of the n second backlight areas to emit backlight if the fingerprint acquisition unit is in an acquisition working state;
the first backlight area is an area where the fingerprint acquisition unit is located, backlight control of the first backlight area and backlight control of the n second backlight areas are mutually independent, and n is a positive integer.
Optionally, the detection module includes: a monitoring unit and a first determining unit;
the monitoring unit is configured to monitor light ray information in real time through the fingerprint acquisition unit, and the light ray information is used for indicating the light ray condition of the position of the fingerprint acquisition unit;
the first determination unit is configured to determine whether the fingerprint acquisition unit is in an acquisition working state according to the light information.
Optionally, the detection module includes: a detection unit and a second determination unit;
a detection unit configured to detect whether the screen receives a pressing operation through the pressure sensor;
the second determining unit is configured to trigger the fingerprint collecting unit to start monitoring light information if the pressing operation is received, and determine whether the fingerprint collecting unit is in a collecting working state or not according to the optical fiber information, wherein the light information is used for indicating the light condition of the position of the fingerprint collecting unit.
According to a fourth aspect of the embodiments of the present disclosure, there is provided a screen backlight control device, the device including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
detecting whether a fingerprint acquisition unit positioned in a screen is in an acquisition working state;
if the fingerprint acquisition unit is in an acquisition working state, controlling the first backlight area not to emit backlight, and controlling at least one second backlight area in the n second backlight areas to emit backlight;
the first backlight area is an area where the fingerprint acquisition unit is located, backlight control of the first backlight area and backlight control of the n second backlight areas are mutually independent, and n is a positive integer.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
detecting whether a fingerprint acquisition unit in a screen is in an acquisition working state or not through a display chip, if so, controlling a first backlight area not to emit backlight and controlling at least one second backlight area in n second backlight areas to emit backlight; the display chip is enabled to only close the backlight of the area where the fingerprint acquisition unit is located when the fingerprint is acquired, the condition that the current LCD cannot display information due to the fact that the whole LCD is closed in the backlight mode is avoided, so that the display chip can control the backlight area of the screen, and the LCD can display partial information.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram illustrating the structure of an LCD panel 100 according to some exemplary embodiments;
FIG. 2 is a schematic diagram illustrating the structure of an OLED panel 200 according to some exemplary embodiments;
FIG. 3 is a schematic diagram illustrating a localized area of the array substrate 210, in accordance with some exemplary embodiments;
FIG. 4 is a schematic diagram of a division manner of an entire backlight area of a screen provided by an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a division manner of the whole backlight area of the screen provided by another embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a division manner of the whole backlight area of the screen provided by another embodiment of the present disclosure;
fig. 7 is a schematic diagram of a division manner of an entire backlight area of a screen according to another embodiment of the present disclosure;
FIG. 8 is a flowchart of a screen backlight control method provided by an embodiment of the present disclosure;
fig. 9A is a flowchart of a screen backlight control method according to another embodiment of the present disclosure;
fig. 9B is a flowchart of a screen backlight control method according to another embodiment of the present disclosure;
fig. 10 is a block diagram of a screen backlight control apparatus provided in an exemplary embodiment of the present disclosure;
fig. 11 is a block diagram of a screen backlight control apparatus according to another exemplary embodiment of the present disclosure;
fig. 12 is a block diagram of a terminal according to an exemplary embodiment of the disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
First, it should be noted that the screen includes an LCD panel or an OLED (Organic Light Emitting Display) panel, and before the embodiments of the present disclosure are described and explained, the LCD panel is described with reference to fig. 1, and the OLED panel is described with reference to fig. 2.
Referring to fig. 1, a schematic diagram of a structure of an LCD panel 100 is shown.
The LCD panel 100 includes: a backlight layer 110, a lower polarizer 120, an array substrate 130, a liquid crystal layer 140, an upper substrate 150, a color filter layer 160, an upper polarizer 170 and a display chip.
Wherein, the lower polarizer 120 is located on the upper layer of the backlight layer 110; the array substrate 130 is located on the upper layer of the lower polarizer 120; the liquid crystal layer 140 is positioned on the upper layer of the array substrate 130; the upper substrate 150 is positioned on the upper layer of the liquid crystal layer 140; the color filter layer 160 is positioned on the upper layer of the upper substrate 150; the upper polarizer 170 is disposed on the color filter layer 160, and the backlight layer 110 is electrically connected to the display chip.
The backlight layer 110 is used to provide backlight for the LCD panel 100, and the type of the backlight layer 110 includes, but is not limited to, any one of EL (Electro luminescence), CCFL (Cold Cathode Fluorescent Lamp), LED (Light Emitting Diode), and the like.
The lower polarizer 120 and the upper polarizer 170 are used for transmitting light in a specific direction, and the transmission axes of the lower polarizer 120 and the upper polarizer 170 are perpendicular to each other.
The array substrate 130 includes x × y pixel units, each including k sub-pixel units. The value of k can be selected to be 3 or 4.
Typically, each pixel unit includes 3 sub-pixel units, namely, an R (RED) sub-pixel unit, a G (Green) sub-pixel unit, and a B (Blue) sub-pixel unit. Optionally, each pixel unit includes 4 sub-pixel units, namely, an R (RED) sub-pixel unit, a G (Green) sub-pixel unit, a B (Blue) sub-pixel unit, and a W (White) sub-pixel unit.
The liquid crystal molecules in the liquid crystal layer 140 are controlled by a TFT (Thin Film Transistor) region 22 in the array substrate 130 to rotate, and transmit light of different degrees at different rotation angles, thereby forming a display gray scale of each sub-pixel unit.
The color filter layer 160 is attached to the upper surface of the upper substrate 150, the color filter layer 160 enables the LCD panel 100 to display a color picture, and the color filter layer 160 includes R, G, B filter regions with three different colors (red, green, and blue) arranged in an array. The light filtering regions correspond to the sub-pixel units on the array substrate 130 one by one.
The display chip is not shown in the figure, and the display chip may be a display processor, a DDIC (display Driver Integrated Circuit), or an MCU (micro controller Unit). The display chip is connected to the liquid crystal layer 140 and the backlight layer 110, and on one hand, the display chip is used for controlling the display of the liquid crystal layer 140, and on the other hand, the display chip is used for controlling the backlight layer 110 to emit light or not according to a certain backlight value.
Optionally, the fingerprint acquisition unit (not shown) is disposed at a lower layer of the LCD panel, and the transmittance of the liquid crystal layer 140 is higher than a predetermined threshold. When an image needs to be displayed, light generated by the backlight layer 110 sequentially passes through the lower polarizer 120, the light-transmitting electrode area 24 on the array substrate 130, the liquid crystal layer 140, the upper substrate 150, the color filter layer 160 and the upper polarizer 170 from bottom to top; the voltage generated by the array substrate 130 controls the turning of the liquid crystal molecules in the liquid crystal layer 140; the liquid crystal layer 140 changes the brightness of light through the turning of liquid crystal molecules, so that different sub-pixel units corresponding to R, G, B three different colors in the color filter layer generate different gray scales, thereby realizing the display of images; when a fingerprint needs to be collected, the display chip controls the backlight layer 110 not to emit light, the fingerprint collecting unit emits emitting light outwards, and then fingerprint characteristics are collected according to the received reflected light.
Referring to fig. 2, a schematic structural diagram of an OLED panel 200 is shown.
The OLED panel 200 includes: array substrate 210, OLED layer 220, glass cover plate 230, polarizer 240.
The OLED layer 220 is located on the upper layer of the array substrate 210, the glass cover plate 230 is located on the upper layer of the OLED layer 220, and the polarizer 240 is located on the upper layer of the substrate 230.
The OLED layer 220 includes x × y pixel units, each pixel unit includes K sub-pixel units, and K may be selected to be 3 or 4. Accordingly, the array substrate 210 also includes x × y pixel units corresponding to the pixel units in the OLED layer 220.
Fig. 3 exemplarily shows an arrangement of the pixel units on the array substrate 210. As shown in fig. 3, the region includes 4 × 4 pixel units, i.e., 16 pixel units, each pixel unit including 3 sub-pixel units 30. Each pixel cell 30 includes: a TFT region 32 and a non-TFT region 34.
It should be noted that fig. 3 only shows a local area of the array substrate 210, the array substrate 210 may be composed of a plurality of areas as shown in fig. 3, the arrangement shown in fig. 3 is merely exemplary and illustrative, and the embodiments of the present disclosure do not limit other possible arrangements.
The polarizer layer 240 is attached to the upper surface of the glass substrate 230.
The display chip is not shown in the figure, and the display chip can be a display processor, a DDIC or an MCU. On one hand, the display chip is used for controlling the display of the OLED layer 220; on the other hand, the display chip is also used for controlling the OLED layer 220 to emit light or not to emit light according to a certain backlight value.
Optionally, a fingerprint acquisition unit (not shown) is located in the OLED panel 200 and connected to the display chip in the OLED panel 20. The fingerprint acquisition function is integrated into the OLED panel, and the panel of the terminal can be provided with the OLED panel only, so that the display function and the fingerprint acquisition function can be realized simultaneously.
For example, the fingerprint collection unit is located on the same layer of the array substrate 210 or between the array substrate 210 and the OLED layer 220. Taking the example that the fingerprint collection unit is located on the same layer of the array substrate 210, the fingerprint collection unit is located in a local area of the array substrate 210, and the fingerprint collection sub-units in the fingerprint collection unit correspond to the sub-pixel units in the local area one by one, where a is less than K × m and b is less than n, or a is less than K × m and b is equal to n, or a is equal to K × m and b is less than n:
namely, each sub-pixel unit in the local area of the array substrate corresponds to one fingerprint acquisition sub-unit.
Optionally, when an image needs to be displayed, the array substrate 210 provides a driving electric field for the OLED layer 220, the organic semiconductor material and the luminescent material in the OLED layer 220 emit light under the driving of the electric field, and the generated light sequentially passes through the glass substrate 230 and the polarizer 240 from bottom to top, so that the image is displayed; when fingerprints need to be collected, the display chip controls the organic semiconductor material and the luminescent material in the OLED layer 220 not to emit light, the fingerprint collecting unit emits emitting light outwards, and then fingerprint characteristics are collected according to the received reflected light.
Based on the LCD panel provided in fig. 1 or the OLED panel provided in fig. 2, the screen includes: the fingerprint acquisition unit comprises a first backlight area and n second backlight areas, wherein the first backlight area is an area where the fingerprint acquisition unit is located, and backlight control of the first backlight area and the backlight control of the n second backlight areas are mutually independent.
Each second backlight area in the n second backlight areas is not intersected with the first backlight area, the union of the n second backlight areas and the first backlight area is the whole backlight area of the screen, and n is a positive integer.
Optionally, the shape of the first backlight area is at least one of a rectangle, a triangle, a trapezoid and a semicircular arch; and/or at least one of the n second backlight regions has at least one of a rectangular shape, a triangular shape, a trapezoidal shape and a semicircular arch shape.
The dividing method for dividing the whole backlight area of the screen into several backlight areas includes, but is not limited to, the following three possible dividing methods. The following description will be given taking as an example a screen including the LCD panel provided in fig. 1. It is obvious to those skilled in the art that, according to the embodiments described below, the corresponding division manner when the screen includes the OLED panel provided in fig. 2 can be deduced by analogy, which is easy for those skilled in the art to understand and will not be described herein again.
The first possible division way: the first backlight region has a rectangular shape, and each of the n second backlight regions has a rectangular shape.
All backlight areas of the screen include M × N backlight areas, M is the number of backlight areas in the vertical direction, N is the number of backlight areas in the horizontal direction, and M × N + 1.
The first backlight region is one of the M x N backlight regions, and the N second backlight regions are N backlight regions except the first backlight region.
Optionally, for each backlight area, a corresponding partitioned backlight module is installed on any one of the upper side, the lower side, the left side and the right side of the screen. The subarea backlight module corresponding to each backlight area is used for independently controlling the backlight brightness of the backlight area.
Optionally, the partitioned backlight module includes a control circuit and a backlight lamp corresponding to each backlight region; illustratively, the backlight is an LED (Light Emitting Diode) lamp.
Optionally, the display chip is connected to a control circuit in the LCD panel, the display chip is connected to each data line in the control circuit, and the display chip is also connected to each control line in the control circuit.
For example, as shown in fig. 4, the backlight layer is divided into 2 × 3 backlight regions: the backlight area 11, the backlight area 12, the backlight area 13, the backlight area 14, the backlight area 15 and the backlight area 16 are provided, one-to-one corresponding subarea backlight modules are arranged on the upper side of the screen corresponding to the backlight area 11, the backlight area 12 and the backlight area 13, and one-to-one corresponding subarea backlight modules are arranged on the lower side of the screen corresponding to the backlight area 14, the backlight area 15 and the backlight area 16. For each backlight area, the corresponding partitioned backlight module is used for independently controlling the backlight brightness of the backlight area. For example, the partitioned backlight module 21 corresponds to the backlight area 11, the partitioned backlight module 22 corresponds to the backlight area 21, the partitioned backlight module 23 corresponds to the backlight area 13, the partitioned backlight module 24 corresponds to the backlight area 14, the partitioned backlight module 25 corresponds to the backlight area 15, and the partitioned backlight module 26 corresponds to the backlight area 16. The partitioned backlight module 21 is used for individually controlling the backlight brightness of the backlight area 11, the partitioned backlight module 22 is used for individually controlling the backlight brightness of the backlight area 12, the partitioned backlight module 23 is used for individually controlling the backlight brightness of the backlight area 13, the partitioned backlight module 24 is used for individually controlling the backlight brightness of the backlight area 14, the partitioned backlight module 25 is used for individually controlling the backlight brightness of the backlight area 15, and the partitioned backlight module 26 is used for individually controlling the backlight brightness of the backlight area 16. The first backlight area comprises a subarea backlight area 15 (including the position of the fingerprint acquisition unit), and the 5 second backlight areas comprise a backlight area 11, a backlight area 12, a backlight area 13, a backlight area 14 and a backlight area 16.
For another example, as shown in fig. 5, the backlight layer is divided into 3 × 3 backlight regions: backlight area 11, backlight area 12, backlight area 13, backlight area 14, backlight area 15, backlight area 16, backlight area 17, backlight area 18, and backlight area 19. The upper side of the screen is provided with one-to-one corresponding subarea backlight modules corresponding to the backlight areas 11, 12 and 13, the lower side of the screen is provided with one-to-one corresponding subarea backlight modules corresponding to the backlight areas 17, 18 and 19, the left side of the screen is provided with a corresponding subarea backlight module corresponding to the backlight area 14, and the right side of the screen is provided with a corresponding subarea backlight module corresponding to the backlight area 16. For example, the partitioned backlight module 21 corresponds to the backlight area 11, the partitioned backlight module 22 corresponds to the backlight area 21, the partitioned backlight module 23 corresponds to the backlight area 13, the partitioned backlight module 24 corresponds to the backlight area 14, the partitioned backlight module 25 corresponds to the backlight area 15, the partitioned backlight module 26 corresponds to the backlight area 16, the partitioned backlight module 27 corresponds to the backlight area 17, the partitioned backlight module 28 corresponds to the backlight area 18, and the partitioned backlight module 29 corresponds to the backlight area 19. Each subarea backlight module is used for independently controlling the backlight brightness of the corresponding backlight area. The first backlight area comprises a backlight area 18 (including the position of the fingerprint acquisition unit), and the 8 second backlight areas comprise a backlight area 11, a backlight area 12, a backlight area 13, a backlight area 14, a backlight area 15, a backlight area 16, a backlight area 17 and a backlight area 19.
In a first possible division manner, taking fig. 5 as an example, since there is no partitioned backlight module corresponding to the backlight area 15 in the screen, if the area where the fingerprint acquisition unit is located is the backlight area 15, the display chip cannot control the backlight brightness of the backlight area 15 alone, so that the screen backlight control method cannot be implemented. The following second possible division may be employed.
The second possible division way: the first backlight region has a triangular shape, and each of the n second backlight regions has a triangular shape.
There is a point in each second backlight region where at least one edge intersects with at least one edge corresponding to the first backlight region in the screen.
Optionally, at least one edge of each second backlight region intersects with at least one edge corresponding to the first backlight region at a center point of the screen, where the center point is a center position of the screen.
As shown in fig. 6, the backlight layer is divided into 8 backlight regions centering on a central point: backlight area 11, backlight area 12, backlight area 13, backlight area 14, backlight area 15, backlight area 16, backlight area 17, and backlight area 18. The upper side of the screen is provided with one-to-one corresponding subarea backlight modules corresponding to the backlight areas 11 and 12, the lower side of the screen is provided with one-to-one corresponding subarea backlight modules corresponding to the backlight areas 13 and 14, the left side of the screen is provided with one-to-one corresponding subarea backlight modules corresponding to the backlight areas 15 and 16, and the right side of the screen is provided with one-to-one corresponding subarea backlight modules corresponding to the backlight areas 17 and 18. For example, the partitioned backlight module 21 corresponds to the backlight area 11, the partitioned backlight module 22 corresponds to the backlight area 21, the partitioned backlight module 23 corresponds to the backlight area 13, the partitioned backlight module 24 corresponds to the backlight area 14, the partitioned backlight module 25 corresponds to the backlight area 15, the partitioned backlight module 26 corresponds to the backlight area 16, the partitioned backlight module 27 corresponds to the backlight area 17, and the partitioned backlight module 28 corresponds to the backlight area 18. Each subarea backlight module is used for independently controlling the backlight brightness of the corresponding backlight area. The first backlight area comprises a backlight area 14 (including the position of the fingerprint acquisition unit), and the 7 second backlight areas comprise a backlight area 11, a backlight area 12, a backlight area 13, a backlight area 15, a backlight area 16, a backlight area 17 and a backlight area 18.
Optionally, areas of any two of the n second backlight regions and the first backlight region are equal, or areas of at least two of the n second backlight regions and the first backlight region are unequal.
In a second possible partitioning manner, taking fig. 6 as an example, the areas of any two backlight regions in the 8 backlight regions are all equal, and if a part of the fingerprint acquisition unit is located in the backlight region 13 and another part is located in the backlight region 14, an asymmetric partitioning manner (the areas of at least two backlight regions in the n second backlight regions and the first backlight region are not equal) may be adopted, such as the following third possible partitioning manner.
A third possible partitioning approach:
alternatively, as shown in fig. 7, the backlight layer is divided into 7 backlight regions with the central point as the center: backlight area 11, backlight area 12, backlight area 14, backlight area 15, backlight area 16, backlight area 17, and backlight area 18. The upper side of the screen is provided with a one-to-one corresponding subarea backlight module corresponding to the backlight area 11 and the backlight area 12, the lower side of the screen is provided with a corresponding subarea backlight module corresponding to the backlight area 14, the left side of the screen is provided with a one-to-one corresponding subarea backlight module corresponding to the backlight area 15 and the backlight area 16, and the right side of the screen is provided with a one-to-one corresponding subarea backlight module corresponding to the backlight area 17 and the backlight area 18. For example, the partitioned backlight module 21 corresponds to the backlight area 11, the partitioned backlight module 22 corresponds to the backlight area 21, the partitioned backlight module 24 corresponds to the backlight area 14, the partitioned backlight module 25 corresponds to the backlight area 15, the partitioned backlight module 26 corresponds to the backlight area 16, the partitioned backlight module 27 corresponds to the backlight area 17, and the partitioned backlight module 28 corresponds to the backlight area 18. Each subarea backlight module is used for independently controlling the backlight brightness of the corresponding backlight area. The first backlight area comprises a backlight area 14 (including the position of the fingerprint acquisition unit), and the 6 second backlight areas comprise a backlight area 11, a backlight area 12, a backlight area 15, a backlight area 16, a backlight area 17 and a backlight area 18.
It should be noted that the present embodiment does not limit the dividing manner of the whole backlight area of the screen.
In summary, in the present embodiment, the whole backlight area of the screen is divided by adopting the above-mentioned dividing manner, that is, for each backlight area, a corresponding partitioned backlight module is installed on any one of the upper side, the lower side, the left side and the right side of the screen, so that the partitioned backlight module corresponding to each backlight area can independently control the backlight brightness of the backlight area.
Referring to fig. 8, a flowchart of a screen backlight control method according to an embodiment of the present disclosure is shown. The present embodiment is exemplified by applying the screen backlight control method to the screen shown in any one of fig. 3 to 7. The method comprises the following steps:
The fingerprint acquisition unit located in the screen includes, but is not limited to, the following two cases: one possible situation is that the fingerprint acquisition unit is in the same layer as the screen; another possibility is that the fingerprint acquisition unit is located in the screen from the front view of the screen, whereas in the actual physical structure the fingerprint acquisition unit is attached to the lower layer of the screen.
Optionally, when the fingerprint acquisition unit and the screen are disposed on the same layer, the transmittance of the liquid crystal layer of the screen is higher than a preset threshold.
Optionally, the display chip detects whether the fingerprint acquisition unit is in an acquisition working state, where the acquisition working state refers to a state in which the fingerprint acquisition unit is acquiring fingerprint features; illustratively, the fingerprint acquisition unit is an optical fingerprint sensor, and the optical fingerprint sensor acquires fingerprint characteristics by utilizing the refraction and reflection principles of light.
And when the display chip detects that the fingerprint acquisition unit is in an acquisition working state, executing the step 802, otherwise, ending the process.
The first backlight area is an area where the fingerprint acquisition unit is located, backlight control of the first backlight area and backlight control of the n second backlight areas are mutually independent, and n is a positive integer; illustratively, the first backlight region and the n second backlight regions are preset.
Optionally, the display chip determines, according to the first backlight area, a first backlight value corresponding to the first backlight area and second backlight values corresponding to the n second backlight areas, respectively; and controlling the first backlight area not to emit backlight according to the first backlight value, and controlling the second backlight area corresponding to the second backlight value to emit backlight according to the n second backlight values.
The first backlight value is used for representing the brightness information of the first backlight area, and the second backlight value is used for representing the brightness information of the corresponding backlight area in the second backlight area.
Optionally, the display chip drives the backlight circuit in the first backlight area not to emit backlight according to the backlight value in the first backlight area; for example, the backlight value of the first backlight area is 0.
Optionally, the display chip drives the backlight circuit of the second backlight region corresponding to the backlight value to emit backlight according to the backlight value of at least one second backlight region in the n second backlight regions; for example, the backlight value of the second backlight area ranges from 0 (excluding 0) to 255 (including 255).
Based on the dividing manner of the whole backlight area of the screen provided in fig. 7, if the fingerprint acquisition unit is in the acquisition working state, the display chip controls the backlight area 14 not to emit backlight, and controls at least one of the 6 second backlight areas (including the backlight area 11, the backlight area 12, the backlight area 15, the backlight area 16, the backlight area 17 and the backlight area 18) to emit backlight.
Optionally, the fingerprint acquisition unit is an optical fingerprint sensor; for example, the optical fingerprint acquisition unit can always emit light outwards, i.e. is always in a running working state; for another example, in consideration of saving power consumption, a predetermined condition is set, and when the predetermined condition is satisfied, the optical fingerprint acquisition unit is triggered to emit light outwards.
Optionally, the display chip detects whether the fingerprint acquisition unit located in the screen is in an acquisition working state, including at least two different detection modes.
When the fingerprint acquisition unit is always in the running working state, step 801 can be alternatively implemented as step 901 and step 902, as shown in fig. 9A:
and step 901, monitoring light information in real time through a fingerprint acquisition unit.
Optionally, the light information is used to indicate a light condition of a position where the fingerprint acquisition unit is located; illustratively, the optical fiber information includes at least one of a wavelength, an incident angle, and an illumination intensity of the reflected light.
And step 902, determining whether the fingerprint acquisition unit is in an acquisition working state according to the light information.
Optionally, the display chip determines whether the monitored light information matches with preset information, and if so, determines that the fingerprint acquisition unit is in an acquisition working state.
When the fingerprint acquisition unit needs to be triggered to enter the running working state, step 801 can be alternatively implemented as step 903, step 904 and step 905, as shown in fig. 9B:
Optionally, the display chip detects whether the screen receives a pressing operation through a pressure sensor.
In step 904, if the pressing operation is received, the fingerprint acquisition unit is triggered to start monitoring the light information.
The light information is used for indicating the light condition of the position of the fingerprint acquisition unit.
Optionally, the display chip determines whether the monitored light information matches with preset information, and if so, determines that the fingerprint acquisition unit is in an acquisition working state.
In summary, in this embodiment, the display chip detects whether the fingerprint acquisition unit located in the screen is in the acquisition working state, and if the fingerprint acquisition unit is in the acquisition working state, the first backlight region is controlled not to emit backlight, and at least one of the n second backlight regions is controlled to emit backlight; the display chip is enabled to only close the backlight of the area where the fingerprint acquisition unit is located when the fingerprint is acquired, the condition that the current LCD cannot display information due to the fact that the whole LCD is closed in the backlight mode is avoided, so that the display chip can control the backlight area of the screen, and the LCD can display partial information.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods. For details not disclosed in the embodiments of the apparatus of the present disclosure, refer to the embodiments of the method of the present disclosure.
Fig. 10 is a block diagram of a screen backlight control device provided in an exemplary embodiment of the present disclosure, which is capable of implementing a screen backlight method provided by the present disclosure, and the screen backlight control device includes: a detection module 1010 and a display chip 1020.
A detection module 1010 configured to implement the above step 801.
A display chip 1020 configured to implement step 802 described above.
In an alternative embodiment provided based on the embodiment shown in fig. 10, as shown in fig. 11, the detecting module 1010 includes: a monitoring unit 1011 and a first determination unit 1012.
A monitoring unit 1011 configured to implement the above step 901.
A first determining unit 1012 configured to implement step 902 described above.
In an alternative embodiment provided based on the embodiment shown in fig. 10, as shown in fig. 11, the detecting module 1010 includes: a detection unit 1013 and a second determination unit 1014.
A detection unit 1013 configured to implement the above step 903.
A second determination unit 1014 configured to implement the above steps 904 and 905.
The relevant details may be combined with the method embodiments described with reference to fig. 8, 9A and 9B. The detection module 1010 is further configured to implement any other implicit or disclosed functions related to the detection step in the foregoing method embodiments; the display chip 1020 is also used to implement any other implicit or disclosed functionality associated with the control steps in the above-described method embodiments.
Another exemplary embodiment of the present disclosure provides a screen backlight control apparatus capable of implementing a screen backlight control method provided by the present disclosure, the apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
detecting whether a fingerprint acquisition unit positioned in a screen is in an acquisition working state;
if the fingerprint acquisition unit is in an acquisition working state, controlling the first backlight area not to emit backlight, and controlling at least one second backlight area in the n second backlight areas to emit backlight;
the first backlight area is an area where the fingerprint acquisition unit is located, backlight control of the first backlight area and backlight control of the n second backlight areas are mutually independent, and n is a positive integer.
It should be noted that, when the apparatus provided in the foregoing embodiment implements the functions thereof, only the division of the functional modules is illustrated, and in practical applications, the functions may be distributed by different functional modules according to needs, that is, the internal structure of the apparatus may be divided into different functional modules to implement all or part of the functions described above. In addition, the apparatus and method embodiments provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments for details, which are not described herein again.
Fig. 12 is a block diagram of a terminal according to an exemplary embodiment of the disclosure, and as shown in fig. 12, the terminal 1200 includes a liquid crystal display panel 1210, a display chip 1220, a memory 1230, a processor 1240, a power component 1250, an audio component 1260, and an I/O interface 12120.
The liquid crystal display panel 1210 may be any of the illustrated LCD panels or OLE D panels provided by the above embodiments.
The display chip 1220 is connected to a control circuit in the LCD panel 1210, the display chip 1220 is connected to each data line in the control circuit, the display chip 1220 is also connected to each control line in the control circuit, and the control circuit is connected to the array of the photosensitive devices in the LCD panel 1210.
The memory 1230 is configured to store various types of data to support operation at the apparatus 1200. Examples of such data include instructions for any application or method operating on the device 1200, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1200 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The processor 1240 generally controls the overall operation of the apparatus 1200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. Processor 1240 may include one or more processors executing instructions to perform all or a portion of the steps of the methods described above. Further, processor 1240 may include one or more modules that facilitate interaction between processor 1240 and other components.
The power supply component 1250 provides power to the various components of the device 1200. The power components 1250 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the apparatus 1200.
The audio component 1260 is configured to output and/or input audio signals. For example, audio component 1260 includes a Microphone (MIC) configured to receive external audio signals when device 1200 is in operating modes, such as call mode, record mode, and voice recognition mode. The received audio signal may further be stored in a memory. In some embodiments, the audio assembly 1260 further comprises a speaker for outputting audio signals.
I/O interface 1270 provides an interface between processor 1240 and peripheral interface modules such as a keyboard, click wheel, buttons, and the like. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It will be understood by those skilled in the art that all or part of the steps in implementing the screen backlight control of the above embodiments may be implemented by hardware, or may be implemented by a program instructing associated hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A screen, characterized in that the screen comprises: the fingerprint acquisition device comprises a first backlight area and n second backlight areas, wherein the area where a fingerprint acquisition unit is located is the first backlight area, and backlight control of the first backlight area and the n second backlight areas are independent;
each of the n second backlight regions does not intersect with the first backlight region, the union of the n second backlight regions and the first backlight region is the whole backlight region of the screen, and n is a positive integer;
when the fingerprint acquisition unit is in an acquisition working state, the first backlight area does not emit backlight and at least one second backlight area in the n second backlight areas emits backlight, and the acquisition working state is a state that the fingerprint acquisition unit is acquiring fingerprint features.
2. A screen according to claim 1,
the shape of the first backlight area is at least one of rectangle, triangle, trapezoid and semi-circular arch;
and/or the presence of a gas in the gas,
at least one of the n second backlight regions has at least one of a rectangular shape, a triangular shape, a trapezoidal shape, and a semicircular arch shape.
3. A screen as recited in claim 1, wherein the first backlight region is rectangular in shape, and each of the n second backlight regions is rectangular in shape;
all backlight areas of the screen comprise M × N backlight areas, wherein M is the number of backlight areas in the vertical direction, N is the number of backlight areas in the horizontal direction, and M × N is N + 1;
the first backlight region is one of the M × N backlight regions, and the N second backlight regions are N backlight regions of the M × N backlight regions except for the first backlight region.
4. A screen as recited in claim 1, wherein the first backlight region is triangular in shape, and each of the n second backlight regions is triangular in shape;
there is a point in the screen where at least one edge in each of the second backlight regions intersects with at least one edge corresponding to the first backlight region.
5. A screen according to any one of claims 1 to 4, wherein the areas of any two of said n second backlight regions and said first backlight region are equal, or the areas of at least two of said n second backlight regions and said first backlight region are not equal.
6. A screen backlight control method for use in a screen including a first backlight region and n second backlight regions, the method comprising:
detecting whether a fingerprint acquisition unit positioned in the screen is in an acquisition working state, wherein the acquisition working state is a state that the fingerprint acquisition unit is acquiring fingerprint characteristics;
if the fingerprint acquisition unit is in the acquisition working state, controlling the first backlight area not to emit backlight, and controlling at least one second backlight area in the n second backlight areas to emit backlight;
the area where the fingerprint acquisition unit is located is the first backlight area, backlight control of the first backlight area and backlight control of the n second backlight areas are independent, and n is a positive integer.
7. The method of claim 6, wherein the detecting whether the fingerprint acquisition unit located in the screen is in an acquisition working state comprises:
monitoring light ray information in real time through the fingerprint acquisition unit, wherein the light ray information is used for indicating the light ray condition of the position of the fingerprint acquisition unit;
and determining whether the fingerprint acquisition unit is in an acquisition working state or not according to the light information.
8. The method of claim 6, wherein the detecting whether the fingerprint acquisition unit located in the screen is in an acquisition working state comprises:
detecting whether the screen receives a pressing operation through a pressure sensor;
and if the pressing operation is received, triggering the fingerprint acquisition unit to start monitoring light information, and determining whether the fingerprint acquisition unit is in an acquisition working state or not according to the light information, wherein the light information is used for indicating the light condition of the position of the fingerprint acquisition unit.
9. A screen backlight control apparatus, the apparatus comprising:
the detection module is configured to detect whether a fingerprint acquisition unit located in the screen is in an acquisition working state, wherein the acquisition working state is a state that the fingerprint acquisition unit is acquiring fingerprint features;
the display chip is configured to control the first backlight area not to emit backlight and control at least one second backlight area of the n second backlight areas to emit backlight if the fingerprint acquisition unit is in the acquisition working state;
the area where the fingerprint acquisition unit is located is the first backlight area, backlight control of the first backlight area and backlight control of the n second backlight areas are independent, and n is a positive integer.
10. A screen backlight control apparatus, the apparatus comprising:
a processor;
a memory for storing the processor-executable instructions;
wherein the processor is configured to:
detecting whether a fingerprint acquisition unit positioned in the screen is in an acquisition working state, wherein the acquisition working state is a state that the fingerprint acquisition unit is acquiring fingerprint characteristics;
if the fingerprint acquisition unit is in the acquisition working state, controlling the first backlight area not to emit backlight, and controlling at least one second backlight area in the n second backlight areas to emit backlight;
the area where the fingerprint acquisition unit is located is the first backlight area, backlight control of the first backlight area and backlight control of the n second backlight areas are independent, and n is a positive integer.
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| CN111505862A (en) * | 2019-01-31 | 2020-08-07 | 北京小米移动软件有限公司 | Liquid crystal display screen and terminal |
| CN109782485A (en) * | 2019-01-31 | 2019-05-21 | 厦门天马微电子有限公司 | A kind of display device |
| CN114280841B (en) | 2020-09-27 | 2023-06-20 | 合肥鑫晟光电科技有限公司 | Light-emitting substrate and display device |
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