CN109166537B - Brightness adjusting method and system of display system and display system - Google Patents
Brightness adjusting method and system of display system and display system Download PDFInfo
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- CN109166537B CN109166537B CN201811320863.1A CN201811320863A CN109166537B CN 109166537 B CN109166537 B CN 109166537B CN 201811320863 A CN201811320863 A CN 201811320863A CN 109166537 B CN109166537 B CN 109166537B
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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
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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
- G09G3/3413—Details of control of colour illumination sources
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Abstract
The invention relates to a brightness adjusting method of a display system, which is used for adjusting the brightness of a display panel penetrating through glasses, wherein the display panel is lightened by a backlight module, the glasses comprise a first lens and a second lens, the display panel comprises a plurality of blocks, and the backlight module comprises a plurality of light-emitting elements; the brightness adjusting method of the display system comprises the following steps: writing a first driving signal into the display panel, controlling the first lens to be opened and controlling each light-emitting element of the backlight module to be opened; adjusting the turn-on time of each light-emitting element from the preset time to a first turn-on time; writing a second driving signal into the display panel, controlling the second lens to be opened and controlling each light-emitting element of the backlight module to be opened; and adjusting the turn-on time of each light-emitting element from the preset time to a second turn-on time.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a brightness adjusting method and system of a display system and the display system.
Background
The brightness displayed by the liquid crystal panel is controlled by the mutual matching of the backlight module, the signal driving module and the glasses driving module. The backlight module is composed of a plurality of light-emitting elements which are arranged according to a certain mode, the light-emitting elements are used for lightening the blocks of the liquid crystal panel, and the average backlight brightness of each block of the liquid crystal panel is different due to the difference of manufacturing processes of the light-emitting elements; the liquid crystal panel and the liquid crystal glasses need to be driven for a certain time to output stable penetration rate due to the physical characteristics of liquid crystal; if the liquid crystal glasses are started synchronously with the writing of the liquid crystal panel driving signal and the starting of the backlight module, the penetration response of the liquid crystal glasses, the penetration response of the liquid crystal panel and the backlight average brightness of each block of the liquid crystal panel are acted together to enable the penetration response of the liquid crystal glasses corresponding to each block of the liquid crystal panel, the product of the penetration response of the liquid crystal panel and the backlight average brightness of each block of the liquid crystal panel to be unequal, and therefore the brightness of each block of the liquid crystal panel penetrating through the liquid crystal glasses is uneven.
Disclosure of Invention
Therefore, it is necessary to provide a method and a system for adjusting the brightness of a display system, which aim at the problem that the transmittance response of the liquid crystal glasses, the transmittance response of the liquid crystal panel and the product of the transmittance response of the liquid crystal panel and the backlight average brightness of each block of the liquid crystal panel are not equal to each other, so that the brightness of each block of the liquid crystal panel is not uniform through the liquid crystal glasses, due to the combined action of the transmittance response of the liquid crystal glasses, the transmittance response of the liquid crystal panel and the backlight average brightness of each block of the liquid crystal panel.
A brightness adjusting method of a display system is used for adjusting the brightness of a display panel penetrating through glasses, the display panel is lightened by a backlight module, the glasses comprise a first lens and a second lens, the display panel comprises a plurality of blocks, and the backlight module comprises a plurality of light-emitting elements; the brightness adjusting method of the display system comprises the following steps:
writing a first driving signal into the display panel, controlling the first lens to be opened and controlling each light-emitting element of the backlight module to be opened;
adjusting the turn-on time of each light-emitting element from the preset time to a first turn-on time;
writing a second driving signal into the display panel, controlling the second lens to be opened and controlling each light-emitting element of the backlight module to be opened;
and adjusting the turn-on time of each light-emitting element from the preset time to a second turn-on time.
In one embodiment, calculating the first on-time and the second on-time comprises:
writing a first driving signal into the display panel, controlling the first lens to be opened and controlling each light-emitting element of the backlight module to be opened;
detecting a first eye lens penetration rate of the first lens corresponding to each light-emitting element, a first panel penetration rate of each block of the display panel corresponding to each light-emitting element and backlight average brightness of each block;
acquiring the starting time of each light-emitting element of the backlight module, and storing the starting time as preset time;
calculating a first starting time of each light-emitting element according to the first glasses transmittance, the first panel transmittance of each block, the backlight average brightness of each block and the preset time;
writing a second driving signal into the display panel, controlling the second lens to be opened and controlling each light-emitting element of the backlight module to be opened;
detecting a second glasses transmittance of the second lens corresponding to each light-emitting element, a second panel transmittance of the display panel corresponding to each block of each light-emitting element and a backlight average brightness of each block;
and calculating a second turn-on time of each light-emitting element according to the second glasses transmittance, the second panel transmittance of each block, the backlight average brightness of each block and the preset time.
A brightness adjusting system is used for adjusting the brightness of a display panel through glasses, the display panel is lightened by a backlight module, the glasses comprise a first lens and a second lens, the display panel comprises a plurality of blocks, and the backlight module comprises a plurality of light-emitting elements; the brightness adjusting system comprises a signal driving module, a glasses driving module and a control module;
the signal driving module is used for writing a first driving signal into the display panel; the glasses driving module is used for controlling the first lens to be opened; the control module is used for controlling each light-emitting element of the backlight module to be started; the control module is also used for adjusting the starting time of each light-emitting element from preset time to first starting time;
the signal driving module is also used for writing a second driving signal into the display panel; the glasses driving module is also used for controlling the opening of the second lens; the control module is also used for controlling each light-emitting element of the backlight module to be started; the control module is further used for adjusting the starting time of each light-emitting element from the preset time to a second starting time.
In one embodiment, the device further comprises a first detector, a second detector and a third detector;
the first detector is used for detecting the first eyeglass penetration rate of the first lens corresponding to each light-emitting element and transmitting the first eyeglass penetration rate to the control module when the signal driving module writes a first driving signal into the display panel, the eyeglass driving module controls the first lens to be started and the control module controls each light-emitting element of the backlight module to be started;
the second detector is used for detecting the first panel penetration rate of each block of the display panel corresponding to each light-emitting element and transmitting the first panel penetration rate to the control module when the signal driving module writes a first driving signal into the display panel, the glasses driving module controls the first lens to be started and the control module controls each light-emitting element of the backlight module to be started;
the third detector is used for detecting the backlight average brightness of each block and transmitting the backlight average brightness to the control module when the signal driving module writes a first driving signal into the display panel, the glasses driving module controls the first lens to be started and the control module controls each light-emitting element of the backlight module to be started;
the control module is also used for acquiring the starting time of each light-emitting element of the backlight module and storing the starting time as preset time;
the control module is further used for calculating the first opening time of each block of the display panel according to the first glasses penetration rate, the first panel penetration rate of each block, the backlight average brightness of each block and the preset time.
In one embodiment, the first detector is further configured to detect a second glasses transmittance of the second lens corresponding to each light emitting element when the signal driving module writes a second driving signal into the display panel, the glasses driving module controls the second lens to be turned on and the control module controls each light emitting element of the backlight module to be turned on, and transmit the second glasses transmittance to the control module;
the second detector is further used for detecting the second panel penetration rate of each block of the display panel corresponding to each light-emitting element and transmitting the second panel penetration rate to the control module when the signal driving module writes a second driving signal into the display panel, the glasses driving module controls the second lens to be turned on and the control module controls each light-emitting element of the backlight module to be turned on;
the third detector is also used for detecting the backlight average brightness of each block and transmitting the backlight average brightness to the control module when the signal driving module writes a second driving signal into the display panel, the glasses driving module controls the second lens to be started and the control module controls each light-emitting element of the backlight module to be started;
the control module is further used for calculating a second opening time of each block of the display panel according to the second glasses penetration rate, the second panel penetration rate of each block, the backlight average brightness of each block and the preset time.
In one embodiment, the control module controls each light-emitting element of the backlight module to be turned on simultaneously.
In one embodiment, the control module controls each light-emitting element of the backlight module to be turned on in sequence.
In one embodiment, the plurality of light emitting elements constitute a backlight source, the backlight source is a lateral light source, and the lateral light source includes a single-side lateral light source and a double-side lateral light source; when the lateral light source is a single-side lateral light source, the number of the light-emitting elements is N, the blocks correspond to the light-emitting elements one by one, and each light-emitting element is used for lighting a corresponding block; when the lateral light source is a bilateral lateral light source, the number of the light-emitting elements is 2N, every two light-emitting elements correspond to one block, and every two light-emitting elements light up one corresponding block.
In one embodiment, the plurality of light emitting elements form a backlight source, the backlight source is a direct-type light source, the number of the light emitting elements is N × M, the light emitting elements are arranged in a matrix of N rows and M columns, the M light emitting elements in each row correspond to one block, and the M light emitting elements in each row illuminate the corresponding block.
A display system comprises a display panel and the brightness adjusting system.
According to the brightness adjusting method, the brightness adjusting system and the display system of the display system, the average backlight brightness of the block corresponding to each light-emitting element is adjusted by adjusting the first opening time and the second opening time of each light-emitting element of the backlight module, so that the product of the penetration rate of each block of the display panel, the penetration rate of the glasses corresponding to each block and the average backlight brightness of each block of the display panel is equal, and the brightness of each block of the display panel passing through the glasses is uniform.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for adjusting brightness of a display system in one embodiment;
FIG. 2 is a diagram illustrating a single-sided lateral-entry light source and a block mapping according to an embodiment;
FIG. 3 is a diagram illustrating a correspondence between dual edge lateral light sources and blocks in an embodiment;
FIG. 4 is a diagram of a direct light source and a block according to an embodiment;
FIG. 5 is a flow chart of calculating a first on time and a second on time in one embodiment;
FIG. 6 is a timing diagram illustrating the transmittance of the display panel, the transmittance of the glasses and the backlight brightness during a display period according to an embodiment;
FIG. 7 is a timing diagram illustrating the transmittance of the display panel, the transmittance of the glasses and the backlight brightness in one display period according to another embodiment;
FIG. 8 is a timing diagram illustrating the transmittance of the display panel, the transmittance of the glasses and the backlight brightness in one display period according to another embodiment;
FIG. 9 is a timing diagram illustrating transmittance of the display panel, transmittance of the glasses and backlight brightness in a display period according to another embodiment;
fig. 10 is a functional block diagram of a brightness adjustment system in one embodiment.
Detailed Description
Please refer to fig. 1, which is a flowchart illustrating a brightness adjusting method of a display system according to a preferred embodiment of the present application. It should be noted that the method of the present application is not limited to the order of the following steps, and in other embodiments, the method of the present application may include only a part of the following steps, or a part of the steps may be deleted. In addition, in other embodiments, one step may be divided into a plurality of steps, or a plurality of steps may be combined into one step.
The brightness adjusting method of the display system is used for adjusting the brightness of a display panel penetrating through glasses, the display panel is lightened by a backlight module, the glasses comprise a first lens and a second lens, the display panel comprises a plurality of blocks, the backlight module comprises a plurality of light-emitting elements, and the backlight source is formed by the light-emitting elements; the brightness adjusting method of the display system comprises the following steps:
step S1, writing the first driving signal into the display panel, controlling the first lens to turn on and controlling each light emitting element of the backlight module to turn on. In one display period, the driving signals include a first driving signal and a second driving signal.
In one embodiment, the glasses are 3D liquid crystal glasses, and the display panel is a 3D liquid crystal display panel.
The backlight may be a side-entry light source or a direct-illumination light source. The lateral light source comprises a single-side lateral light source and a double-side lateral light source. The control module controls each light-emitting element of the backlight module to be simultaneously or sequentially started.
As shown in fig. 2, in one embodiment, the lateral light source is a single-side lateral light source, the light emitting elements are LEDs and are N in number, the blocks correspond to the LEDs one by one, and each LED is used for lighting a corresponding block, for example, LED1 lights block BL1, LED2 lights block BL 2.
As shown in fig. 3, in one embodiment, the lateral light source is a double-sided lateral light source, the number of the light emitting elements is 2N, each two LEDs correspond to one block, and each two LEDs light one block, for example, LED1A and LED1B light block BL1, LED2A and LED2B light block BL 2.
The lateral light source uses a small number of light-emitting elements, which is beneficial to reducing the weight of the product.
In one embodiment, as shown in fig. 4, the backlight source is a direct-lit light source. The number of the light-emitting elements is N × M, the light-emitting elements are arranged in a matrix of N rows and M columns, M LEDs in each row correspond to one block, M LEDs in each row are lighted to correspond to one block, and the light-emitting elements are LEDs. The LEDs 1A, LEDs 1B, …, LED1M make up a first row of LED backlight units LEDs 1; LED2A, LED2B, …, LED2M make up a second row of LED backlight units, LEDs 2; …, LEDNA, LEDNB, …, LEDNM constitute the Nth row of LED backlight units LEDN. Each row of LED backlight units is configured to illuminate a corresponding one of the blocks, for example, the LED1 illuminates the block BL1, the LED2 illuminates the block BL 2.
The direct light source can make the brightness of each block of the display panel more uniform.
The light emitting element may also be a CCFL (Cold Cathode Fluorescent Lamp).
In step S2, the turn-on time of each light emitting element is adjusted from the preset time to the first turn-on time.
The first turn-on time is the turn-on time of each light emitting element corresponding to the writing of the first driving signal and the turning on of the first mirror in one display period of the display panel. The preset time is a default on-time before the on-time of each light emitting element is adjusted.
It should be noted that, in one display period of the display panel, the driving current of each light emitting element is a preset current, the first driving signal is written into the display panel, and the on time of each light emitting element is turned off after reaching the first on time.
Step S3, writing the second driving signal into the display panel, controlling the second lens to turn on and controlling each light emitting element of the backlight module to turn on.
In step S4, the turn-on time of each light emitting element is adjusted from the preset time to the second turn-on time.
The second turn-on time is the turn-on time of each light emitting element corresponding to the writing of the second driving signal and the turning on of the second mirror in one display period of the display panel.
It should be noted that, in one display period of the display panel, the second driving signal is written into the display panel, and the on time of each light emitting element reaches the second on time and then is turned off.
The plurality of light emitting elements of the backlight module are simultaneously or sequentially turned on. In a display period of the display panel, if the display panel is written corresponding to the first driving signal and the first mirror is turned on, and each light emitting element is turned on in sequence, the display panel is written corresponding to the second driving signal and the second mirror is turned on, and each light emitting element is turned on in sequence. If the display panel is written corresponding to the first driving signal and the first lens is started, and each light-emitting element is synchronously started, the display panel is written corresponding to the second driving signal and the second lens is started, and each light-emitting element is synchronously started.
Referring to fig. 5, calculating the first on time and the second on time includes the steps of:
step S01, writing the first driving signal into the display panel, controlling the first lens to turn on and controlling each light emitting element of the backlight module to turn on.
In step S02, a first lens transmittance of the first lens corresponding to each light emitting element, a first panel transmittance of the display panel corresponding to each block of each light emitting element, and a backlight average brightness of each block are detected.
The first glasses transmittance is a glasses transmittance of the first lens corresponding to the first driving signal writing and corresponding to each light-emitting element. The first panel penetration rate is a panel penetration rate of each block of the display panel corresponding to the writing of the first driving signal.
The brightness of each block of the display panel passing through the liquid crystal glasses is the product of the transmittance of the display panel, the transmittance of the glasses and the average backlight brightness of the display panel. The average backlight luminance of the display panel is the average backlight luminance for lighting the display panel, and the luminance of the display panel is the luminance displayed by the display panel. Therefore, the transmittance of each block of the display panel, the transmittance of the glasses corresponding to each block and the product of the average backlight brightness of each block of the display panel can be equal by adjusting the average backlight brightness of each block of the display panel, so that the brightness of each block of the display panel through the liquid crystal glasses is uniform. The average backlight brightness of each block can be adjusted by adjusting the turn-on time of a corresponding light-emitting element. The transmittance of the glasses corresponding to each zone is the transmittance of the glasses corresponding to the light-emitting element corresponding to each zone. The average luminance of the backlight of each block corresponds to the average luminance of the light emitting elements of each block.
In step S03, the turn-on time of each light emitting element of the backlight module is obtained and stored as the preset time.
Step S04, calculating a first on time of each light emitting element according to the first transmittance, the first panel transmittance of each block, the average backlight brightness of each block, and the preset time.
When the first lens transmittance, the first panel transmittance of each block and the average brightness of each block are known, one of the blocks is taken as a reference block, then the brightness of the block passing through the first lens can be obtained, the brightness of the block passing through the first lens is taken as the reference brightness, if the brightness of each block of the display panel passing through the first lens is to be uniform, the brightness of the rest blocks of the display panel passing through the first lens is taken as the reference brightness, since the first lens transmittance and the first panel transmittance of each block are known, the backlight average brightness difference between the rest blocks of the display panel and the reference block can be obtained, since the average backlight brightness of a block is in direct proportion to the turn-on time of the corresponding light emitting element, the first turn-on time is a preset time (a ratio of 1+ the average brightness difference to the average brightness of the corresponding block).
Step S05, writing the second driving signal into the display panel, controlling the second lens to turn on and controlling each light emitting element of the backlight module to turn on.
In step S06, the second glasses transmittance of the second lens corresponding to each light emitting device, the second panel transmittance of the display panel corresponding to each block of each light emitting device, and the average backlight brightness of each block are detected.
The second glasses transmittance is a glasses transmittance of the second lens corresponding to the second driving signal writing and corresponding to each light emitting element. The second panel penetration rate is the panel penetration rate of each block of the display panel corresponding to the writing of the second driving signal.
Step S07, calculating a second on time of each light emitting element according to the second glasses transmittance, the second panel transmittance of each block, the average backlight brightness of each block, and the preset time.
When the second glasses transmittance, the second panel transmittance of each block and the backlight average brightness of each block are known, one of the blocks is taken as a reference block, then the brightness of the block passing through the second lens can be obtained, the brightness of the block passing through the second lens is taken as the reference brightness, if the brightness of each block of the display panel passing through the second lens is to be uniform, the brightness of the rest blocks of the display panel passing through the second lens is taken as the reference brightness, since the second glasses transmittance and the second panel transmittance of each block are known, the backlight average brightness difference between the rest blocks of the display panel and the reference block can be obtained, since the average backlight brightness of a block is in direct proportion to the turn-on time of the corresponding light emitting element, the second turn-on time is a preset time (a ratio of 1+ the average brightness difference to the average brightness of the corresponding block).
To better illustrate the method of the present application, a detailed description is given below with reference to fig. 6 to 9. Referring to fig. 6, the light source is a side-entry light source and each light emitting device is turned on in sequence. The turn-on time of each light emitting element is t1, t 2., tN, i.e., the lighting time of each corresponding block is t1, t 2., tN, t1 ═ t2 … ═ tN ═ t, where t is the preset time. Curve 1 is the first driving signal written into the display panel. Curve 2 is the first lens transmittance of the first lens corresponding to each light emitting device, and the first lens transmittance of the first lens corresponding to each light emitting device is L _ T _1, L _ T _2, …, L _ T _ N, respectively. "Δ" of the first half of the display period of fig. 6 is the first panel transmittance corresponding to the on-time of each light emitting element for each tile, and the first panel transmittance corresponding to the on-time of each light emitting element for each tile is OC _ TL _1, OC _ TL _2, …, OC _ TL _ N, respectively.
The rectangle in the first half of the display period of fig. 6 represents the average backlight luminance of each block, the average luminance of the block BL1 is BL _ ave _1, the average luminance of the block BL2 is BL _ ave _2. Due to the difference in the manufacturing process of the backlight module, BL _ ave _1 ≠ BL _ ave _2 ≠ … ≠ BL _ ave _ N. At this time, the luminance BL _ ave _1 _ OC _ TL _1 _ L _ T _1 ≠ BL _ ave _2 _ OC _ TL _2 _ L _ T _2 ≠ … ≠ BL _ ave _ N _ OC _ TL _ N _ L _ T _ N of each block of the display panel viewed by the user through the first mirror, i.e., the luminance of each block of the display panel through the first mirror is not uniform.
Referring to fig. 7, 8 and 9, the first on time and the second on time of each light emitting device are adjusted respectively, and the on time of each light emitting device is adjusted to the first on time tL1, tL2, tLN and the second on time tR1, tR2, tRN respectively by t1, t 2. Corresponding to the first on-time of each light emitting element, the average luminance of the block BL1 is changed from BL _ ave _1 to BL _ ave _ L1 ', the average luminance of the block BL2 is changed from BL _ ave _2 to BL _ ave _ L2 ', and the average luminance of the block BLN is changed from BL _ ave _ N to BL _ ave _ LN '. At this time, the luminance BL _ ave _ L1 '× OC _ TL _1 × L _ T _ 1' × BL _ ave _ L2 '× OC _ TL _2 × L _ T _2 ═ BL _ ave _ LN' × OC _ TL _ N _ L _ T _ N of each block of the display panel seen by the user through the first mirror is uniform.
Corresponding to the second on time of each light emitting element, the average luminance of the block BL1 is changed from BL _ ave _1 to BL _ ave _ R1 ', the average luminance of the block BL2 is changed from BL _ ave _2 to BL _ ave _ R2 ', and the average luminance of the block BLN is changed from BL _ ave _ N to BL _ ave _ R N '. At this time, the luminance BL _ ave _ R1 '× OC _ TR _1 × R _ T _ 1' × BL _ ave _ R2 '× OC _ TR _2 × R _ T _2 ═ … ═ BL _ ave _ R N' × OC _ TR _ N × R _ T _ N of each block of the display panel seen by the user through the first mirror is uniform, that is, the luminance of each block of the display panel through the second mirror is uniform.
In summary, according to the brightness adjusting method of the display system of the present application, the first on time and the second on time of each light emitting element of the backlight module are adjusted, so as to adjust the average backlight brightness of the block corresponding to each light emitting element, so that the product of the transmittance of each block of the display panel, the transmittance of the glasses corresponding to each block, and the average backlight brightness of each block of the display panel is equal, and thus the brightness of each block of the display panel passing through the liquid crystal glasses is uniform.
The brightness adjustment system provided in the embodiment of the present application will be described in detail below with reference to fig. 10. It should be noted that, the brightness adjustment system shown in fig. 10 is used for executing the method of the embodiment shown in fig. 1 of the present application, and for convenience of description, only the portion related to the embodiment of the present application is shown, and details of the technology are not disclosed, please refer to the embodiment shown in fig. 1 of the present application.
Referring to fig. 10, the brightness adjusting system is used for adjusting the brightness of a display panel through glasses, the display panel is lighted by a backlight module, the glasses include a first lens and a second lens, and the display panel includes a plurality of blocks. The brightness adjusting system includes a signal driving module 10, a glasses driving module 20 and a control module 30. The signal driving module 10 is used for writing a first driving signal into the display panel. The glasses driving module 20 is used for controlling the first lens to open. The control module 30 is used for controlling each light emitting element of the backlight module to be turned on. The control module 30 is further configured to adjust the on-time of each light emitting element from a preset time to a first on-time.
The signal driving module 10 is further configured to write a second driving signal into the display panel. The glasses driving module 20 is further configured to control the second lens to be opened. The control module 30 is further configured to control each light emitting element of the backlight module to be turned on. The control module 30 is further configured to adjust the on-time of each light emitting element from the preset time to a second on-time.
The brightness adjustment system further includes a first detector 40, a second detector 50, and a third detector 60. The first detector 40 is configured to detect a first lens transmittance of the first lens corresponding to each light emitting element when the signal driving module 10 writes a first driving signal into the display panel, the glasses driving module 20 controls the first lens to be turned on and the control module 30 controls each light emitting element of the backlight module to be turned on, and transmit the first lens transmittance to the control module 30. The second detector 50 is configured to detect a first panel transmittance of each block of the display panel corresponding to each light emitting element when the signal driving module 10 writes the first driving signal into the display panel, the glasses driving module 20 controls the first lens to be turned on and the control module 30 controls each light emitting element of the backlight module to be turned on, and transmit the first panel transmittance to the control module 30. The third detector 60 is configured to detect the average backlight brightness of each block and transmit the average backlight brightness to the control module 30 when the signal driving module 10 writes the first driving signal into the display panel, the glasses driving module 20 controls the first lens to be turned on, and the control module 30 controls each light emitting element of the backlight module to be turned on.
The control module 30 is further configured to obtain a turn-on time of each light emitting element of the backlight module, and store the turn-on time as a preset time.
The control module 30 is further configured to calculate a first on time of each light emitting element according to the first glasses transmittance, the first panel transmittance of each block, the average backlight brightness of each block, and the preset time.
The first detector 40 is further configured to detect a second glasses transmittance of the second lens corresponding to each light emitting element when the signal driving module 10 writes a second driving signal into the display panel, the glasses driving module 20 controls the second lens to be turned on and the control module 30 controls each light emitting element of the backlight module to be turned on, and transmit the second driving signal to the control module 30. The second detector 50 is further configured to detect a second panel transmittance of each block of the display panel corresponding to each light emitting element when the signal driving module 10 writes a second driving signal into the display panel, the glasses driving module 20 controls the second lens to be turned on and the control module 30 controls each light emitting element of the backlight module to be turned on, and transmit the second panel transmittance to the control module 30. The third detector 60 is further configured to detect the average backlight brightness of each block and transmit the average backlight brightness to the control module 30 when the signal driving module 10 writes a second driving signal into the display panel, the glasses driving module 20 controls the second lens to be turned on, and the control module 30 controls each light emitting element of the backlight module to be turned on.
The control module 30 is further configured to calculate a second on time of each light emitting element according to the second glasses transmittance, the second panel transmittance of each block, the average backlight brightness of each block, and the preset time.
The brightness adjusting system adjusts the backlight average brightness of the block corresponding to each light-emitting element by adjusting the first opening time and the second opening time of each light-emitting element of the backlight module, so that the product of the penetration rate of each block of the display panel, the penetration rate of glasses corresponding to each block and the backlight average brightness of each block of the display panel is equal, and the brightness of each block of the display panel penetrating through the glasses is uniform.
The application also provides a display system, which comprises a display panel and the brightness adjusting system.
The display panel of the embodiment of the invention can be any one of the following: a liquid crystal display panel, an OLED display panel, a QLED display panel, a Twisted Nematic (TN) or Super Twisted Nematic (STN) type, an In-Plane Switching (IPS) type, a Vertical Alignment (VA) type, a curved panel, or other display panels.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A brightness adjusting method of a display system is used for adjusting the brightness of a display panel through glasses, the display panel is lightened by a backlight module, the glasses comprise a first lens and a second lens, the display panel comprises a plurality of blocks, the backlight module comprises a plurality of light-emitting elements, and the plurality of blocks correspond to the plurality of light-emitting elements; the brightness adjusting method of the display system is characterized by comprising the following steps of:
writing a first driving signal into the display panel, controlling the first lens to be opened and controlling each light-emitting element of the backlight module to be opened;
adjusting the turn-on time of each light-emitting element from the preset time to a first turn-on time;
writing a second driving signal into the display panel, controlling the second lens to be opened and controlling each light-emitting element of the backlight module to be opened;
adjusting the turn-on time of each light-emitting element from the preset time to a second turn-on time;
wherein calculating the first on-time and the second on-time comprises:
writing a first driving signal into the display panel, controlling the first lens to be opened and controlling each light-emitting element of the backlight module to be opened;
detecting a first eye lens penetration rate of the first lens corresponding to each light-emitting element, a first panel penetration rate of each block of the display panel corresponding to each light-emitting element and backlight average brightness of each block;
acquiring the starting time of each light-emitting element of the backlight module, and storing the starting time as preset time;
calculating a first opening time of each light-emitting element according to the first glasses transmittance, the first panel transmittance of each block, the backlight average brightness of each block and the preset time, wherein the first opening time is the sum of the preset time and a first product, the first product is the product of the preset time and a first ratio, and the first ratio is the ratio of the backlight average brightness difference to the backlight average brightness of the block where the light-emitting element is located; the backlight average brightness difference value is the backlight average brightness difference value of the block where the light-emitting element is positioned and the backlight average brightness difference value of the first reference block;
writing a second driving signal into the display panel, controlling the second lens to be opened and controlling each light-emitting element of the backlight module to be opened;
detecting a second glasses transmittance of the second lens corresponding to each light-emitting element, a second panel transmittance of the display panel corresponding to each block of each light-emitting element and a backlight average brightness of each block;
calculating a second opening time of each light-emitting element according to the second glasses penetration rate, the second panel penetration rate of each block, the backlight average brightness of each block and the preset time, wherein the second opening time is the sum of the preset time and a second product, the second product is the product of the preset time and a second ratio, and the second ratio is the ratio of the backlight average brightness difference to the backlight average brightness of the block where the light-emitting element is located; the backlight average brightness difference value is the backlight average brightness difference value between the block where the light-emitting element is located and the backlight average brightness difference value of the second reference block.
2. A brightness adjusting system is used for adjusting the brightness of a display panel through glasses, the display panel is lightened by a backlight module, the glasses comprise a first lens and a second lens, the display panel comprises a plurality of blocks, the backlight module comprises a plurality of light-emitting elements, and the plurality of blocks correspond to the plurality of light-emitting elements; the brightness adjusting system is characterized by comprising a signal driving module, a glasses driving module and a control module;
the signal driving module is used for writing a first driving signal into the display panel; the glasses driving module is used for controlling the first lens to be opened; the control module is used for controlling each light-emitting element of the backlight module to be started; the control module is also used for adjusting the starting time of each light-emitting element from preset time to first starting time;
the signal driving module is also used for writing a second driving signal into the display panel; the glasses driving module is also used for controlling the opening of the second lens; the control module is also used for controlling each light-emitting element of the backlight module to be started; the control module is also used for adjusting the starting time of each light-emitting element from preset time to second starting time;
the brightness adjusting system also comprises a first detector, a second detector and a third detector;
the first detector is used for detecting the first eyeglass penetration rate of the first lens corresponding to each light-emitting element and transmitting the first eyeglass penetration rate to the control module when the signal driving module writes a first driving signal into the display panel, the eyeglass driving module controls the first lens to be started and the control module controls each light-emitting element of the backlight module to be started;
the second detector is used for detecting the first panel penetration rate of each block of the display panel corresponding to each light-emitting element and transmitting the first panel penetration rate to the control module when the signal driving module writes a first driving signal into the display panel, the glasses driving module controls the first lens to be started and the control module controls each light-emitting element of the backlight module to be started;
the third detector is used for detecting the backlight average brightness of each block and transmitting the backlight average brightness to the control module when the signal driving module writes a first driving signal into the display panel, the glasses driving module controls the first lens to be started and the control module controls each light-emitting element of the backlight module to be started;
the control module is also used for acquiring the starting time of each light-emitting element of the backlight module and storing the starting time as preset time;
the control module is further configured to calculate a first on time of each block of the display panel according to the first eye penetration rate, the first panel penetration rate of each block, the backlight average brightness of each block, and the preset time, where the first on time is a sum of the preset time and a first product, the first product is a product of the preset time and a first ratio, and the first ratio is a ratio of a backlight average brightness difference to the backlight average brightness of the block in which the light emitting element is located; the backlight average brightness difference value is the backlight average brightness difference value of the block where the light-emitting element is positioned and the backlight average brightness difference value of the first reference block;
the first detector is further used for detecting a second glasses transmittance of the second lens corresponding to each light-emitting element and transmitting the second glasses transmittance to the control module when the signal driving module writes a second driving signal into the display panel, the glasses driving module controls the second lens to be turned on and the control module controls each light-emitting element of the backlight module to be turned on;
the second detector is further used for detecting the second panel penetration rate of each block of the display panel corresponding to each light-emitting element and transmitting the second panel penetration rate to the control module when the signal driving module writes a second driving signal into the display panel, the glasses driving module controls the second lens to be turned on and the control module controls each light-emitting element of the backlight module to be turned on;
the third detector is also used for detecting the backlight average brightness of each block and transmitting the backlight average brightness to the control module when the signal driving module writes a second driving signal into the display panel, the glasses driving module controls the second lens to be started and the control module controls each light-emitting element of the backlight module to be started;
the control module is further configured to calculate a second on time of each block of the display panel according to the second glasses transmittance, the second panel transmittance of each block, the average backlight brightness of each block, and the preset time, where the second on time is a sum of the preset time and a second product, the second product is a product of the preset time and a second ratio, and the second ratio is a ratio of a backlight average brightness difference to the average backlight brightness of the block where the light-emitting element is located; the backlight average brightness difference value is the backlight average brightness difference value between the block where the light-emitting element is located and the backlight average brightness difference value of the second reference block.
3. The system of claim 2, wherein the control module controls each light emitting element of the backlight module to be turned on simultaneously.
4. The system of claim 2, wherein the control module controls each light emitting element of the backlight module to be turned on in sequence.
5. The system of claim 2, wherein the plurality of light emitting elements form a backlight source, the backlight source is a lateral light source, and the lateral light source comprises a single-sided lateral light source and a double-sided lateral light source; when the lateral light source is a single-side lateral light source, the number of the light-emitting elements is N, the blocks correspond to the light-emitting elements one by one, and each light-emitting element is used for lighting a corresponding block; when the lateral light source is a bilateral lateral light source, the number of the light-emitting elements is 2N, every two light-emitting elements correspond to one block, and every two light-emitting elements light up one corresponding block.
6. A brightness adjusting system according to claim 2, wherein the plurality of light emitting elements constitute a backlight source, the backlight source is a direct-type light source, the number of light emitting elements is N × M, and the light emitting elements are arranged in a matrix of N rows and M columns, M light emitting elements in each row correspond to one block, and M light emitting elements in each row illuminate a corresponding block.
7. The brightness adjustment system according to claim 2, wherein the glasses are 3D liquid crystal glasses.
8. The system according to claim 2, wherein the display panel is a 3D liquid crystal display panel.
9. The brightness adjustment system according to claim 2, wherein the light emitting element is an LED.
10. A display system comprising a display panel and the brightness adjustment system of any one of claims 2 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811320863.1A CN109166537B (en) | 2018-11-07 | 2018-11-07 | Brightness adjusting method and system of display system and display system |
| PCT/CN2018/122518 WO2020093552A1 (en) | 2018-11-07 | 2018-12-21 | Brightness adjustment method of display system, brightness adjustment system and display system |
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| CN201811320863.1A CN109166537B (en) | 2018-11-07 | 2018-11-07 | Brightness adjusting method and system of display system and display system |
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| CN109166537B true CN109166537B (en) | 2021-08-24 |
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| CN109166537A (en) | 2019-01-08 |
| WO2020093552A1 (en) | 2020-05-14 |
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