CN113494991A - Optical detection method of display device - Google Patents
Optical detection method of display device Download PDFInfo
- Publication number
- CN113494991A CN113494991A CN202010198088.8A CN202010198088A CN113494991A CN 113494991 A CN113494991 A CN 113494991A CN 202010198088 A CN202010198088 A CN 202010198088A CN 113494991 A CN113494991 A CN 113494991A
- Authority
- CN
- China
- Prior art keywords
- time
- optical
- value
- period
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention discloses an optical detection method of a display device, which comprises the following steps: the display device displays a first picture, the first picture has a first optical value, and the optical detection device measures the first picture in a first time period to obtain a first detection value; step B, the display device displays a second picture, the second picture has a second optical value, and the optical detection device measures the second picture in a second time period to obtain a second detection value; the first optical value is greater than the second optical value and the first time period is less than the second time period. The invention can avoid the problem of inaccurate result caused by the fact that the detection value is too full due to too long detection time when detecting the bright-order picture, and can also avoid the problem that the detection value is too small and has no reference property due to too short detection time when detecting the dark-order picture, thereby accurately measuring the optical value of the display device and facilitating a user to confirm whether to adjust the display device according to the detection result.
Description
Technical Field
The present invention relates to an optical detection method for a display device, and more particularly, to a method for accurately measuring optical characteristics of a display device.
Background
In recent years, people's lives are improving, and consumers are upgrading, so that display devices (such as flat panel displays and the like) are increasingly widely used. In order to ensure the quality and reliability of the display device, various electrical and optical tests, such as brightness, are performed during the manufacturing process. How to accurately measure the brightness of the display device becomes a problem to be considered by those skilled in the art.
Disclosure of Invention
The invention aims to provide a method for detecting display brightness of a display device, which is used for accurately measuring the display brightness of the display device.
In order to achieve the above object, the present invention provides an optical inspection method for a display device, comprising:
step A, the display device displays a first picture, the first picture has a first optical value, and the optical detection device measures the first picture in a first time period to obtain a first detection value; and
step B, the display device displays a second picture, the second picture has a second optical value, and the optical detection device measures the second picture in a second time period to obtain a second detection value;
the sequence of the step A and the step B can be interchanged, the first optical value is larger than the second optical value, and the first time period is smaller than the second time period.
As an optional technical solution, the first detection value is an accumulated amount of the optical signal received by the optical detection device in the first time period; the second detection value is an accumulated amount of the optical signal received by the optical detection device in the second time period.
As an optional technical solution, the display device periodically displays the first image in a first display period, and the first display period has a display phase and a blank phase, and the display phase and the blank phase have a first time ratio.
As an optional technical solution, the detection method further includes a step C including:
step C1, determining a first effective receiving time of the optical detection device in the first time period according to the first time period, the first display period and the first time ratio, and determining a first actual unit value according to the first detection value and the first effective receiving time; and
step C2, the display device has a first predetermined unit value for the first optical value, and compares the first predetermined unit value with the first actual unit value to determine whether the display device displays normally at the first optical value.
As an optional technical solution, step C1 includes:
step C11, determining a first cycle number and a first remainder according to the first time period and the first display cycle;
step C12, determining the first occupation time of the display stage and the second occupation time of the blank stage in a display period according to the first display period and the first time ratio;
step C13, determining a first additional number according to the first remainder and the first occupation time;
step C14, determining a first blank time of the blank period within the first time period according to the first cycle number, the second occupied time and the first additional number; and
step C15, determining the first effective receiving time according to the first time period and the first blank time.
As an optional technical solution, the first blank time is equal to a sum of a product of the first cycle number and the second occupied time plus the first additional number; the first effective receive time is equal to a difference between the first time period and the first blank time.
As an optional technical solution, when the first remainder is smaller than the first occupation time, the first addend is 0; when the first remainder is greater than the first occupation time, the first additional number is the difference value of the first remainder minus the first occupation time.
As an optional technical solution, the optical detection device has a limit detection value, and if the first detection value reaches the limit detection value, the optical detection device sends a first prompt, and the optical detection device adjusts the first time period downward according to the first prompt and re-measures the first time period.
As an optional technical solution, before the step a, an optical detection device is calibrated to ensure that the starting point of each measurement is the same.
As an optional technical solution, the step of calibrating the optical detection device includes:
step A1, the display device displays a test frame, the test frame has the first display period;
step A2, the optical detection device starts to receive the optical signal of the display device after a third time interval;
step A3, the optical detection device finishes receiving the optical signal of the display device after a fourth time interval and obtains an initial detection value;
step A4, determining a first delay time period according to the initial detection value, the fourth time period, the first display period and the first time ratio; and
step a5, adjusting a time point when the optical detection device starts to receive the optical signal according to the first delay time period and the third time period.
In the invention, the optical detection time of the optical detection device to the display device is different along with the difference of the optical value, and when the optical value is larger, the detection time is shorter; when the optical value is smaller, the detection time is longer, for example, the detection time may gradually decrease as the optical value increases. The optical value is, for example, a gray scale value, a luminance value, or the like. Therefore, the problem of inaccurate result caused by over-saturated detection value due to over-long detection time during detection of the bright-order picture can be avoided, and the problem of no reference property caused by over-small detection value due to over-short detection time during detection of the dark-order picture can be avoided, so that the optical value of the display device can be accurately measured, and a user can conveniently confirm whether the display device needs to be adjusted according to the detection result.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is a flowchart illustrating a method for detecting display luminance of a display device according to the present invention;
FIG. 2 is a schematic diagram of an optical detection device receiving an optical signal when the display device has a first optical value according to the present invention;
FIG. 3 is a schematic diagram of the optical detection device receiving an optical signal when the display device has a second optical value according to the present invention;
FIG. 4 is a schematic diagram of an optical signal received before calibration by the optical detection apparatus of the present invention;
FIG. 5 is a diagram illustrating an optical signal received after calibration by the optical detection apparatus of the present invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following detailed description of the embodiments is given.
Referring to fig. 1 to 3, fig. 1 is a flowchart illustrating a method for detecting display brightness of a display device according to the present invention; FIG. 2 is a schematic diagram of an optical signal received by the optical detection device when the display device of the present invention has a first optical value; FIG. 3 is a schematic diagram of the optical detection device receiving an optical signal when the display device has a second optical value.
The method for detecting the display brightness of the display device comprises the following steps:
step A (S100), the display device displays a first frame having a first optical value, and the optical detection device measures the first frame in a first time period T1 to obtain a first detection value A1.
And B (S200), the display device displays a second frame having a second optical value, and the optical detection device measures the second frame in a second time period T2 to obtain a second detection value A2.
The sequence of the step A and the step B can be interchanged, the first optical value is greater than the second optical value, and the first time period T1 is less than the second time period T2.
In this embodiment, the first optical value and the second optical value are gray scale values, and when the first frame has the first optical value, the gray scale value of the red pixel is 255, the gray scale value of the green sub-pixel is 255, and the gray scale value of the blue sub-pixel is 255. The first period T1 is 119.4ms, and the first detection value A1 is 10500. When the second frame has the second optical value, the gray scale value of the red pixel is 0, the gray scale value of the green sub-pixel is 0, and the gray scale value of the blue sub-pixel is 0. The second period T2 is 710ms, and the second detection value a2 is 130. In other embodiments, the first optical value and the second optical value may also be brightness values, etc., but not limited thereto.
In the present embodiment, the first detection value a1 is the accumulated amount of optical signals received by the optical detection device in the first period T1; the second detection value a2 is the accumulated amount of the optical signal received by the optical detection device in the second period T2. The optical signal is, for example, luminous flux or other physical quantity converted by calculation of luminous flux.
In the optical detection of a display device, taking the detection of gray scale as an example, the measurement is usually performed on a screen displaying various gray scales (or each gradation), for example, on screens with gray scales of 255, 200, 100, 5, and 0. As can be seen from fig. 3 and 4, in the embodiment, when the display device has the first optical value, the optical detection device receives a higher optical signal, and the detection value is larger; when the display device has the second optical value, the optical detection device receives a lower optical signal value, and the detection value is smaller. If the same detection time is used for each stage of the image, the following situation may result:
(1) the bright level is too full. In actual operation, the optical detection device has a limit detection value E, and when the accumulated amount of the optical signal received by the optical detection device reaches the limit detection value E, even if the detection time is still increasing, the detection value remains at the limit detection value E, which results in inaccurate final detection results.
(2) The dark level cannot resolve the difference. In order to avoid the phenomenon that the detection value of the bright-order picture cannot be updated after reaching the limit detection value E in the detection process in the case (1) to cause a detection error, the detection time is shortened, but the detection value of the dark-order picture is too small to distinguish the difference of each-order picture (for example, a picture with 5 gray scales and a picture with 0 gray scale), so that the detection result has no reference.
In the invention, the optical detection time of the optical detection device to the display device is different along with the difference of the optical value, and when the optical value is larger, the detection time is shorter; when the optical value is smaller, the detection time is longer, for example, the detection time may gradually decrease as the optical value increases. The optical value is, for example, a gray scale value, a luminance value, or the like. Therefore, the problem of inaccurate result caused by over-saturated detection value due to over-long detection time during detection of the bright-order picture can be avoided, and the problem of no reference property caused by over-small detection value due to over-short detection time during detection of the dark-order picture can be avoided, so that the optical value of the display device can be accurately measured, and a user can conveniently confirm whether the display device needs to be adjusted according to the detection result.
With reference to fig. 2 and fig. 3, the display device periodically displays the first frame in a first display period C1, and the first display period C has a display period D and a blank period B, and the display period D and the blank period B have a first time ratio S. In this embodiment, if the update frequency of the display device is 50Hz, the first display period C1 is 20 ms. The first time ratio S of the display phase D to the blank phase B in one display period is 1080: 45.
As shown in fig. 2 and fig. 3, in this embodiment, regardless of whether the display device displays the first screen or the second screen, after the display device switches the screens, the starting time point of the optical detection device receiving the optical signal is the same, for example, the starting point of one display period after a certain time after the screen is switched is used as the starting time point of the receiving optical signal, and further, in this embodiment, the starting point of the display stage D in the display period is used as the starting time point of the optical detection device receiving the optical signal, so that the reference time point of receiving the optical signal by the optical detection device is the same each time, and the detection value obtained by each detection for the display device is ensured to be accurate.
In this embodiment, the detection method further includes a step C including:
step C1, determining a first effective receiving time T1 of the optical detection device in the first time period T1 according to the first time period T1, the first display period C and the first time ratio S, and determining a first actual unit value according to the first detection value A1 and the first effective receiving time T1; and
step C2, the display device has a first predetermined unit value for the first optical value, and compares the first predetermined unit value with the first actual unit value to determine whether the display device displays normally at the first optical value, so that the user can determine whether to adjust the physical components or electrical parameters of the display device until the display is normal.
Specifically, step C1 further includes:
step C11, determining a first period number N1 and a first remainder R1 according to the first time period T1 and the first display period C;
step C12, determining a first occupation time dt of a display stage D and a second occupation time bt of a blank stage B in a display period according to the first display period C and the first time ratio S;
step C13, determining a first additional number P1 according to the first remainder R1 and the first occupation time dt;
step C14, determining a first blank time tt1 of the blank phase B in the first time period T1 according to the first cycle number N1, the second occupied time bt and the first additional number P1; and
at step C15, a first valid reception time T1 is determined according to the first time period T1 and the first blank time tt 1.
In this embodiment, the first blank time tt1 is equal to the sum of the product of the first cycle number N1 and the second occupied time bt plus the first additional number P1; the first valid receive time T1 is equal to the difference between the first time period T1 and the first blank time tt 1.
In this embodiment, when the first remainder R1 is smaller than the first occupation time dt, the first addend P1 is 0; when the first remainder R1 is greater than the first occupancy time dt, the first addend P1 is the difference of the first remainder R1 minus the first occupancy time dt.
In this embodiment, step C further includes:
step C3, determining a second effective receiving time T2 of the optical detection device in the second time period T2 according to the second time period T1, the first display period C and the first time ratio S, and determining a second actual unit value according to the second detection value A2 and the second effective receiving time T2; and
step C4, the display device has a second predetermined unit value for the second optical value, and the second predetermined unit value is compared with the second actual unit value to determine whether the display device displays the second optical value normally, so that the user can determine whether to adjust the physical components or the electrical parameters of the display device until the display is normal.
Specifically, step C3 further includes:
step C31, determining a second period number N2 and a second remainder R2 according to the second time period T2 and the first display period C;
step C32, determining a second additional number P2 according to the second remainder R2 and the first occupation time dt;
step C33, determining a second blank time tt2 of the blank phase B in a second time period T2 according to the second cycle number N2, the second occupied time bt and a second additional number P2; and
at step C35, a second valid reception time T2 is determined according to the second time period T2 and the second blank time tt 2.
In this embodiment, the second blank time tt2 is equal to the sum of the product of the second cycle number N2 and the second occupied time bt plus the second additional number P2; the second valid reception time T2 is equal to the difference between the second period T2 and the second blank time tt 2.
In this embodiment, when the second remainder R2 is smaller than the first occupation time dt, the second addend P2 is 0; when the second remainder R2 is greater than the first occupancy time dt, the second addend P2 is the difference of the second remainder R2 minus the first occupancy time dt.
The following describes a specific calculation using the numerical values of the present example.
First, calculating the first actual unit value
First, a first effective receiving time t1 is calculated according to step C1. In particular, the method comprises the following steps of,
according to step C11, a first number of cycles N1 and a first remainder R1 are determined from the first time period T1 and the first display period C. From 119.4ms to 5 × 20ms +19.4ms, the first cycle number N1 is determined to be 5, and the first remainder R1 is determined to be 19.4 ms.
According to step C12, a first occupied time dt of the display phase D and a second occupied time bt of the blank phase B in one display period are determined by the first display period C and the first time ratio S.
The first occupancy time dt is 20ms (1080/(1080+45)) -19.2ms
The second occupancy time bt is 20ms (45/(1080+45)) -0.8 ms; or
The second occupancy time bt is 20ms to 19.2ms 0.8 ms.
According to step C13, a first additional number P1 is determined from the first remainder R1 and the first elapsed time dt.
The first remainder R1 is 19.4ms and the first occupancy time dt is 19.2ms, such that the first remainder R1 is greater than the first occupancy time dt, then:
the first additional number P1 is the first remainder R1, and the first elapsed time dt is 19.4ms to 19.2ms is 0.2 ms.
According to step C14, a first blanking time tt1 of the blanking period B within the first time period T1 is determined from the first number of cycles N1, the second occupied time bt and the first additional number P1.
The first blank time tt1 is the first period number N1, the second occupied time bt + the first additional number P1
＝5*0.8ms+0.2ms＝4.2ms
In accordance with step C15, a first valid receive time T1 is determined from the first time period T1 and the first blank time tt 1. The first time period T1 is the time occupied by the blank period B, and the rest can be regarded as the effective time of receiving the optical signal.
First effective reception time T1 — first time period T1 — first blanking time tt1
＝119.4ms-4.2ms＝115.2ms
Then, according to step C1, a first actual unit value is determined using the first detection value a1 and the first valid reception time t 1.
First actual unit value a 1/first effective reception time t1 10500/115.2 91.15
In practical operation, if the first detection value a1 reaches the limit detection value E during the detection process, the optical detection device issues a first prompt, and the optical detection device adjusts the first time period T1 downward according to the first prompt and re-measures the first time period T1.
Second, calculating a second actual unit value
First, the second valid receiving time t2 is calculated according to step C3. In particular, the method comprises the following steps of,
according to the step C31, the second period number N2 and the second remainder R2 are determined from the second period T2 and the first display period C. According to the method, the 710ms is 35 × 20ms +10ms, the second period number N2 is determined to be 35, and the second remainder R2 is determined to be 10 ms.
According to step C32, a second addend P2 is determined from the second remainder R2 and the first elapsed time dt.
The second remainder R2 is 10ms, the first occupation time dt is 19.2ms, so that the second remainder R2 is smaller than the first occupation time dt, and the second addend P2 is equal to 0.
According to step C33, a second blanking time tt2 of the blanking period B within the second time period T2 is determined from the second number of cycles N2, the second occupied time bt and the second additional number P2.
A second blank time tt2, a second period number N2, a second occupied time bt, and a second additional number P2
＝35*0.8ms＝28ms
In accordance with step C34, a second valid reception time T2 is determined from the second time period T2 and the second blank time tt 2. The time occupied by the blank period B is removed in the second time period T2, and the rest can be regarded as the effective time of receiving the optical signal.
Second effective reception time T2 ═ second time period T2 — second blank time tt2
＝710ms-28ms＝682ms
A second actual unit value is then determined using the second detection value a2 and the second valid reception time t 2.
The second actual unit value is the second detection value a 2/the second effective reception time t2 is 0.19/130/682
In practice, before step a, the method further includes calibrating the optical inspection apparatus 100 to ensure that the starting point of each measurement is the same, so as to further ensure the accuracy and consistency of the inspection results.
Referring to fig. 4 and 5, fig. 4 is a schematic diagram of a received optical signal before calibration of the optical detection apparatus of the present invention; FIG. 5 is a diagram illustrating an optical signal received after calibration by the optical detection apparatus of the present invention.
In this embodiment, the step of calibrating the optical detection device includes:
step a1, providing a calibration display device, wherein the calibration display device displays a test frame, the calibration display device has a comparison detection value and a first comparison unit value corresponding to the test frame, and the test frame has a first display period C. In this example, the control detection value is 130, and the first control unit value is 0.19.
In step a2, after the calibration display device displays the test frame, the optical detection device starts to receive the optical signal of the calibration display device at an interval of an initial time period T3. In the present embodiment, the initial period T3 is 1000 ms.
In step A3, after the optical detection device starts to receive the optical signal, the optical detection device finishes receiving the optical signal of the calibration display device and obtains an initial detection value O at a predetermined time interval T4. In this embodiment, the predetermined time period T4 is 710ms, and the initial detection value O is 129.
Step a4, a first delay time period rt is determined according to the initial detection value O, the comparison detection value and the first comparison unit value.
In this embodiment, the initial detection value O is 129, the comparison detection value is 130, and the initial detection value O is smaller than the comparison detection value, so that it is known that the effective receiving time of the optical detection device is smaller than the standard effective receiving time, and the time point when the optical detection device starts receiving the optical signal needs to be adjusted, for example, the initial time period T3 is reduced, so that the time point when the optical detection device starts receiving the optical signal is shifted forward.
Step a5, adjusting the time point when the optical detection device starts receiving the optical signal according to the first advance time period rt and the third time period T3.
First advance period rt (control detection value-initial detection value)/first control unit value
＝1/0.19＝5.3ms
Therefore, the time point when the optical detection device starts receiving the light signal needs to be shifted forward by 5.3ms, that is, the initial time period T3 needs to be shortened to 1000-5.3 ═ 994.7ms, which can be regarded as the calibration time period, that is, when the calibration display device displays the test picture 994.7ms, the optical detection device starts receiving the light signal. As shown in fig. 3 and 4, the time point when the calibrated optical detection device starts receiving the light signal is the starting point of one display period after the display device switches the picture for a certain period of time, and further, is the starting point of the display period D in the display period.
In practical operation, the calibration period may have a corresponding relationship with the first display period C, and the LUT may be established by adjusting the first display period C of the display device to different values to perform measurement to obtain a plurality of measurement values. When the optical detection device performs optical detection on the display device, a table can be looked up in advance to confirm the calibration time period corresponding to the current display period, and the limit that the first display period C is 20ms is not taken as a limit.
In the invention, the optical detection time of the optical detection device to the display device is different along with the difference of the optical value, and when the optical value is larger, the detection time is shorter; when the optical value is smaller, the detection time is longer, for example, the detection time may gradually decrease as the optical value increases. The optical value is, for example, a gray scale value, a luminance value, or the like. Therefore, the problem of inaccurate result caused by over-saturated detection value due to over-long detection time during detection of the bright-order picture can be avoided, and the problem of no reference property caused by over-small detection value due to over-short detection time during detection of the dark-order picture can be avoided, so that the optical value of the display device can be accurately measured, and a user can conveniently confirm whether the display device needs to be adjusted according to the detection result.
The present invention is capable of other embodiments, and various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. An optical inspection method for a display device, comprising:
step A, the display device displays a first picture, the first picture has a first optical value, and the optical detection device measures the first picture in a first time period to obtain a first detection value; and
step B, the display device displays a second picture, the second picture has a second optical value, and the optical detection device measures the second picture in a second time period to obtain a second detection value;
the sequence of the step A and the step B can be interchanged, the first optical value is larger than the second optical value, and the first time period is smaller than the second time period.
2. The optical inspection method of claim 1, wherein: the first detection value is the accumulation amount of the optical signal received by the optical detection device in the first time period; the second detection value is an accumulated amount of the optical signal received by the optical detection device in the second time period.
3. The optical inspection method of claim 2, wherein: the display device displays the first picture periodically in a first display period, and the first display period is internally provided with a display stage and a blank stage, and the display stage and the blank stage have a first time ratio.
4. The optical inspection method of claim 3, wherein: the detection method also comprises a step C, which comprises the following steps:
step C1, determining a first effective receiving time of the optical detection device in the first time period according to the first time period, the first display period and the first time ratio, and determining a first actual unit value according to the first detection value and the first effective receiving time; and
step C2, the display device has a first predetermined unit value for the first optical value, and compares the first predetermined unit value with the first actual unit value to determine whether the display device displays normally at the first optical value.
5. The optical inspection method of claim 4, wherein: step C1 includes:
step C11, determining a first period number and a first remainder according to the first period and the first display period;
step C12, determining a first occupation time of the display phase and a second occupation time of the blank phase in a display period according to the first display period and the first time ratio;
step C13, determining a first additional number according to the first remainder and the first occupation time;
step C14, determining a first blank time of the blank period within the first time period according to the first cycle number, the second occupied time and the first additional number; and
step C15, determining the first valid receiving time according to the first time period and the first blank time.
6. The optical inspection method of claim 5, wherein: the first blank time is equal to the sum of the product of the first cycle number and the second occupied time and the first additional number; the first effective receive time is equal to a difference between the first time period and the first blank time.
7. The optical inspection method of claim 5, wherein: when the first remainder is less than the first occupation time, the first additional number is 0; when the first remainder is greater than the first occupation time, the first additional number is the difference value of the first remainder minus the first occupation time.
8. The optical inspection method of claim 1, wherein: the optical detection device is provided with a limit detection value, if the first detection value reaches the limit detection value, the optical detection device sends out a first prompt, and the optical detection device adjusts the first time period downwards according to the first prompt and measures again.
9. The optical inspection method of claim 3, wherein: before step a, calibrating the optical detection device to ensure that the starting point of each measurement is the same.
10. The optical inspection method of claim 9, wherein: the step of calibrating the optical detection device comprises:
step A1, the display device displays a test frame, the test frame has the first display period;
step A2, the optical detection device starts to receive the optical signal of the display device after a third time interval;
step A3, after a fourth time interval, the optical detection device finishes receiving the optical signal of the display device and obtains an initial detection value;
step A4, determining a first delay period according to the initial detection value, the fourth period, the first display period and the first time ratio; and
step a5, adjusting a time point when the optical detection device starts to receive the optical signal according to the first delay time period and the third time period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010198088.8A CN113494991A (en) | 2020-03-19 | 2020-03-19 | Optical detection method of display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010198088.8A CN113494991A (en) | 2020-03-19 | 2020-03-19 | Optical detection method of display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113494991A true CN113494991A (en) | 2021-10-12 |
Family
ID=77994303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010198088.8A Pending CN113494991A (en) | 2020-03-19 | 2020-03-19 | Optical detection method of display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113494991A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001013914A (en) * | 1999-06-30 | 2001-01-19 | Mitsubishi Electric Corp | Image display device |
| CN1489171A (en) * | 2002-07-26 | 2004-04-14 | ������������ʽ���� | Image display device brightness measuring method, manufacturing method, characteristic adjusting method and characteristic adjusting device |
| CN1571011A (en) * | 2003-11-21 | 2005-01-26 | 友达光电股份有限公司 | Method for displaying image on optical display device with discrepancy brightness attenuation pixel |
| JP2006330158A (en) * | 2005-05-24 | 2006-12-07 | Matsushita Electric Ind Co Ltd | Led display device |
| CN103926714A (en) * | 2013-06-28 | 2014-07-16 | 上海天马微电子有限公司 | Gamma correction system of display device and correction method |
| CN103985333A (en) * | 2013-12-26 | 2014-08-13 | 上海中航光电子有限公司 | Gamma value measuring method of display apparatus |
| CN104916270A (en) * | 2015-05-29 | 2015-09-16 | 努比亚技术有限公司 | Method for adjusting screen brightness and device thereof |
| US20150310790A1 (en) * | 2013-03-27 | 2015-10-29 | Panasonic Intellectual Property Management Co., Ltd. | Display device |
| CN105427788A (en) * | 2015-12-31 | 2016-03-23 | 武汉天马微电子有限公司 | Method and system for automatically adjusting brightness and chroma of display device |
| US20180158400A1 (en) * | 2015-08-24 | 2018-06-07 | Mitsubishi Electric Corporation | Led display device and luminance correction method therefor |
| CN108304803A (en) * | 2018-01-31 | 2018-07-20 | 京东方科技集团股份有限公司 | Optical detection circuit, light detection method and display device |
| CN109461406A (en) * | 2018-12-17 | 2019-03-12 | Oppo广东移动通信有限公司 | Display methods, device, electronic equipment and medium |
-
2020
- 2020-03-19 CN CN202010198088.8A patent/CN113494991A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001013914A (en) * | 1999-06-30 | 2001-01-19 | Mitsubishi Electric Corp | Image display device |
| CN1489171A (en) * | 2002-07-26 | 2004-04-14 | ������������ʽ���� | Image display device brightness measuring method, manufacturing method, characteristic adjusting method and characteristic adjusting device |
| CN1571011A (en) * | 2003-11-21 | 2005-01-26 | 友达光电股份有限公司 | Method for displaying image on optical display device with discrepancy brightness attenuation pixel |
| JP2006330158A (en) * | 2005-05-24 | 2006-12-07 | Matsushita Electric Ind Co Ltd | Led display device |
| US20150310790A1 (en) * | 2013-03-27 | 2015-10-29 | Panasonic Intellectual Property Management Co., Ltd. | Display device |
| CN103926714A (en) * | 2013-06-28 | 2014-07-16 | 上海天马微电子有限公司 | Gamma correction system of display device and correction method |
| CN103985333A (en) * | 2013-12-26 | 2014-08-13 | 上海中航光电子有限公司 | Gamma value measuring method of display apparatus |
| CN104916270A (en) * | 2015-05-29 | 2015-09-16 | 努比亚技术有限公司 | Method for adjusting screen brightness and device thereof |
| US20180158400A1 (en) * | 2015-08-24 | 2018-06-07 | Mitsubishi Electric Corporation | Led display device and luminance correction method therefor |
| CN105427788A (en) * | 2015-12-31 | 2016-03-23 | 武汉天马微电子有限公司 | Method and system for automatically adjusting brightness and chroma of display device |
| CN108304803A (en) * | 2018-01-31 | 2018-07-20 | 京东方科技集团股份有限公司 | Optical detection circuit, light detection method and display device |
| CN109461406A (en) * | 2018-12-17 | 2019-03-12 | Oppo广东移动通信有限公司 | Display methods, device, electronic equipment and medium |
Non-Patent Citations (2)
| Title |
|---|
| 深圳市森力普电子有限公司: "LED测试仪 Feasa LED测试仪 Feasa LED Tenter（Analyser）", pages 4, Retrieved from the Internet <URL:http://www.yi7.com/sell/show-587142.html#:~:text=%E6%B5%8B%E8%AF%95%E9%80%9F%E5%BA%A6%E5%8F%96%E5%86%B3%E4%BA%8ELED%E7%9A%84%E4%BA%AE%E5%BA%A6%EF%BC%8C%E4%BA%AE%E5%BA%A6%E9%AB%98%E7%9A%84%E6%B5%8B%E8%AF%95%E6%97%B6%E9%97%B4%E7%9F%AD%EF%BC%8C%E4%BA%AE%E5%BA%A6%E4%BD%8E%E7%9A%84%E6%B5%8B%E8%AF%95%E6%97%B6%E9%97%B4%E9%95%BF%E3%80%82,%E6%A0%B9%E6%8D%AELED%E7%9A%84%E5%85%89%E5%BC%BA%EF%BC%88%E4%BA%AE%E5%BA%A6%EF%BC%89%E4%B8%80%E6%AC%A1%E5%90%8C%E6%97%B6%E6%B5%8B%E8%AF%9520%E4%B8%AALED%E7%9A%84%E6%97%B6%E9%97%B4%E5%BF%AB%E8%BE%BE1.2ms%E3%80%82%20%E4%BB%8E%E5%85%89%E7%BA%A4%E4%B8%AD%E8%AF%BB%E5%8F%96%E6%95%B0%E6%8D%AE%EF%BC%8C%E5%B9%B3%E5%9D%87%E6%AF%8F%E6%A0%B9%E5%85%89%E7%BA%A4%E5%A4%A7%E7%BA%A65ms%E3%80%82> * |
| 铁***: "LED测试仪一般的测试时间是多久", pages 1, Retrieved from the Internet <URL:https://m.iask.sina.com.cn/b/tNodZJyVr.html> * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107450305B (en) | Time correction method and device for clock chip and intelligent equipment | |
| CN106791209A (en) | The self-checking device and method of distance of mobile terminal sensor | |
| US4608657A (en) | Method and apparatus for testing probe calibration | |
| CN112419976B (en) | Driving method of display device and display device | |
| US20060187182A1 (en) | Apparatus and method for compensating regional nonuniformity of a display panel | |
| CN112365862B (en) | Display panel brightness adjusting method and device | |
| CN106662484B (en) | Optical camera brightness detected value and colorimetric detection value calibration method and device | |
| US9762750B2 (en) | Method for the automatic parameterization of the error detection of an image inspection system | |
| US10605648B2 (en) | Testing system for float liquid level transmitter | |
| CN113494991A (en) | Optical detection method of display device | |
| CN113493099A (en) | Metering device | |
| CN110264928B (en) | Backlight chip detection method and device and storage medium | |
| CN110136212B (en) | DeMura equipment pixel point brightness extraction precision judging method and noise detection method | |
| CN110535997A (en) | A kind of calibration method, device, equipment and the storage medium of terminal screen light leakage | |
| CN109145728B (en) | Afterglow blanking method and device and computer readable storage medium | |
| CN111276092B (en) | Optimization parameter determination method and device | |
| CN110033723B (en) | Display input delay detection system and method | |
| US20180268778A1 (en) | Image processing apparatus, display apparatus, and image processing method | |
| US20040236531A1 (en) | Method for adaptively testing integrated circuits based on parametric fabrication data | |
| JP2002297219A (en) | Testing device and testing method | |
| TWI770161B (en) | Optical measurement apparatus | |
| JP3815542B2 (en) | Color conversion device, color conversion coefficient calculation device, color conversion method, and color conversion coefficient calculation method | |
| US20080231390A1 (en) | Matching impedance method, impedance matching circuit, and personal computer employing the impedance matching circuit | |
| KR20140036907A (en) | Brightness ununiformity measuring method for display panel | |
| CN111210763B (en) | Gamma calibration method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |