WO2017088453A1 - 显示装置的测试方法和测试设备 - Google Patents
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- display device
- brightness
- testing
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- saturation point
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- 238000012360 testing method Methods 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims description 15
- 238000004364 calculation method Methods 0.000 claims description 6
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- 238000002834 transmittance Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 12
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- 230000000694 effects Effects 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
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- 239000004973 liquid crystal related substance Substances 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
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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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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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
- G09G3/36—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 using liquid crystals
Definitions
- Embodiments of the present application relate to display technologies, and in particular, to a test method and a test apparatus for a display device.
- brightness uniformity is an important and commonly used optical index.
- the introduction of optical components in the binary import stage involves testing the brightness uniformity index of the optical parameters of the LCD TV.
- the quality of the optical index is directly related to the flatness of the LCD TV light guide plate. Fortunately, the better the display effect of each area of the LCD TV, the smaller the difference between the screen effect and the center point of each area.
- the test of the optical index is generally directed to a display device under a factory setting, and the display device that cannot pass the test may be performed. Repair or scrapping.
- the factory settings of different display devices tend to reduce the display brightness to varying degrees, and thus the test results of the optical index are reduced to varying degrees.
- the maximum brightness of the display device may be reduced by 10% to 20%, which may cause the display device that originally meets the brightness uniformity index to be determined as a defective product. To repair or scrap, causing unnecessary losses.
- the purpose of the present application is to provide a test method and a test device for a display device, which can improve the default setting of the existing display device during the test process, and reduce the brightness uniformity index.
- the question of the test result is to provide a test method and a test device for a display device, which can improve the default setting of the existing display device during the test process, and reduce the brightness uniformity index.
- an embodiment of the present application provides a testing method of a display device, including:
- the brightness uniformity of the display device was tested.
- the method before the testing the brightness uniformity of the display device, the method further includes:
- the brightness related parameter includes any one or more of the following:
- the brightness of the backlight of the display device is the brightness of the backlight of the display device
- the light transmittance of the display panel in the display device is the light transmittance of the display panel in the display device
- the display contrast of the display device is the display contrast of the display device.
- the predetermined threshold of the brightness related parameter is a factory preset value of the display device.
- the adjusting the gain value of each color in the white balance parameter of the display device to a respective saturation point comprises:
- the gain value of any of the colors does not coincide with its saturation point, the gain value of the color is adjusted to the saturation point in the white balance parameter.
- an embodiment of the present application further provides a testing device for a display device, including:
- a first adjusting unit configured to adjust a gain value of each color of the white balance parameter of the display device to a respective saturation point before the testing mechanism tests brightness uniformity of the display device.
- the testing device further includes:
- a second adjusting unit configured to adjust, before the testing mechanism tests the brightness uniformity of the display device, all the brightness-related parameters that differ from the preset value by more than a predetermined threshold to a state corresponding to the maximum display brightness.
- the brightness related parameter includes any one or more of the following:
- the brightness of the backlight of the display device is the brightness of the backlight of the display device
- the light transmittance of the display panel in the display device is the light transmittance of the display panel in the display device
- the display contrast of the display device is the display contrast of the display device.
- the predetermined threshold of the brightness related parameter is a factory preset value of the display device.
- the first adjusting unit includes:
- An acquiring module configured to acquire a preset picture signal input to the display device
- a calculation module configured to calculate a saturation point of a gain value of each color according to the preset picture signal obtained by the acquiring module
- a determining module configured to determine whether a gain value of each color is consistent with a respective saturation point obtained by the computing module
- the adjustment module is configured to adjust the gain value of the color to the saturation point in the white balance parameter when the gain value of any one of the colors does not coincide with the saturation point.
- an embodiment of the present application further provides a testing device for a display device, including:
- the processor, the memory, and the communication interface complete communication with each other through the bus;
- the communication interface is used for information transmission between the test device and a communication device of the display device;
- the processor is configured to invoke logic instructions in the memory to perform the following methods:
- the gain values of each of the white balance parameters of the display device are adjusted to respective saturation points; the brightness uniformity of the display device is tested.
- an embodiment of the present application further provides a computer program, including program code, where the program code is configured to perform the following operations:
- the processor is configured to invoke logic instructions in the memory to perform the following methods:
- the gain values of each of the white balance parameters of the display device are adjusted to respective saturation points; the brightness uniformity of the display device is tested.
- an embodiment of the present application further provides a storage medium for storing a computer program as described above.
- the testing method of the display device eliminates the white balance correction pair in the factory setting by adjusting the gain value of each color in the white balance parameter to the respective saturation points before testing the brightness uniformity of the display device.
- the effect of the test results of brightness uniformity can be more Accurately, the test results of this optical indicator can also be increased compared with the prior art. It can be seen that the application helps to improve the accuracy of the test results of brightness uniformity and reduce the loss caused by misjudgment of qualified products.
- FIG. 1 is a flow chart showing the steps of a test method of a display device in an embodiment of the present application
- FIG. 2 is a flow chart showing the steps of a testing method of a display device according to still another embodiment of the present application.
- FIG. 3 is a schematic flow chart of a step of adjusting a white balance parameter in an embodiment of the present application
- FIG. 4 is a structural block diagram of a test apparatus of a display device in an embodiment of the present application.
- FIG. 5 is a structural block diagram of a test apparatus of a display device in still another embodiment of the present application.
- FIG. 6 is a structural block diagram of a test apparatus of a display device in still another embodiment of the present application.
- FIG. 1 is a schematic flow chart of steps of a testing method of a display device according to an embodiment of the present application. Referring to Figure 1, the method includes:
- Step 10 Adjust the gain value of each color in the white balance parameter to the respective saturation point
- Step 30 Test the brightness uniformity of the display device.
- the display device described in the embodiments of the present application may be any product or component having a display function, such as a display panel, an electronic paper, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator, etc.;
- the method of the embodiments of the present application can be used in the testing process of any of the above products or components.
- step 30 the test of the brightness uniformity of the display device belongs to A part of the test process of the display device.
- the test process of the brightness uniformity of the display device may be specifically performed as follows: First, the power input and the display signal input are provided to the display device, so that the display device can display a monochrome image; and then, using the distance display plane A light intensity detector of a predetermined distance (for example, 1 to 20 cm) measures the intensity of light output at each position on the plane; finally, the uniformity of the light intensity at all positions is calculated and compared by comparison with a standard value. Test indicator of brightness uniformity of the device.
- step 30 may perform the test of brightness uniformity of the display device by using other specific implementations with reference to the prior art, which is not limited in this application.
- the white balance parameter may include, for example, a red gain value, a green gain value, and a blue gain value, and the above-mentioned saturation points respectively refer to the condition that the display brightness is as large as possible. Red gain value, green gain value, and blue gain value.
- the specific process of the adjustment may also have a corresponding specific form, which is not limited in this application. It can be understood that the white balance parameter may be standardized after the display device is completed, and thus deviates from the above saturation point under normal conditions.
- step 10 can adjust the gain value of each color in the white balance parameter to the respective saturation point before the test of the brightness uniformity, thereby eliminating the influence of the white balance correction on the test result of the brightness uniformity. It can be seen that the test result of brightness uniformity can be more accurate under the condition that the display device has relatively large brightness, and the test result of the optical index can also be increased compared with the prior art. It can be seen that the embodiments of the present application contribute to improving the accuracy of the test result of brightness uniformity and reducing the loss caused by misjudgment of the qualified product.
- the embodiment of the present application further provides a testing method for another display device.
- 2 is a schematic flow chart of steps of a testing method of a display device in an embodiment of the present application. Referring to FIG. 2, the testing method includes:
- Step 10 Adjust the gain value of each color in the white balance parameter to the respective saturation point
- Step 20 Adjust all the brightness-related parameters of the display device that differ from the preset value by more than a predetermined threshold to a state when the display brightness is maximized;
- Step 30 Test the brightness uniformity of the display device.
- step 10 and step 20 are performed before the brightness uniformity of the test display device, and the order of execution between them may be in no particular order.
- the test method of the embodiment of the present application includes, in addition to the above steps 10 and 30, step 20: adjusting all the brightness-related parameters of the display device that differ from the preset value by more than a predetermined threshold to enable display.
- the “brightness-related parameter” refers to any one or more setting parameters that affect the display brightness in the display device; for example, when the display device is specifically a liquid crystal television, the brightness-related parameters include Any one or more of the following: 1 brightness of the backlight of the display device; 2 light transmittance of the display panel in the display device; 3 display contrast of the display device. It can be seen that the adjustment of these parameters can change the display brightness of the display panel as a whole, thus affecting the test of brightness uniformity.
- the preset value may be a preset value when the display brightness is maximum, or may be a preset value of the display device, and the preset threshold is a preset range of the allowable deviation from the preset value. .
- the preset threshold is a preset range of the allowable deviation from the preset value.
- adjusting the brightness-related parameter to the state where the display brightness is maximized is advantageous for making the overall brightness of the display device of the display device improve when the brightness uniformity is tested, thereby also improving the accuracy of the test result of the brightness uniformity. , reduce the loss caused by misjudgment of qualified products.
- FIG. 3 is a schematic flowchart of a step of adjusting white balance parameters in an embodiment of the present application.
- the above step 10 in the embodiment of the present application: adjusting the gain value of each color in the white balance parameter to the respective saturation point may specifically include the following steps as shown in FIG. 2:
- Step 101 Acquire a preset picture signal input to the display device.
- Step 102 Calculate a saturation point of a gain value of each color according to a preset picture signal
- Step 103 Determine whether the gain value of each color is consistent with the respective saturation points
- Step 104 When the gain value of any color does not coincide with its saturation point, the gain value of the color is adjusted to the saturation point in the white balance parameter.
- the preset preset picture signal may be a limit eight gray scale nine window in the prior art. Therefore, in the embodiment of the present application, the preset picture signal may be numerically sampled in step 101, and then the saturation point of the gain value of each color is calculated in the existing saturation point calculation manner in step 102. Therefore, step 103 can determine whether the gain value of each color is consistent with the respective saturation point, and the specific determination manner may be, for example, determining whether the difference between the two is less than a predetermined level; and in step 104, in step 103. When it is determined that the gain value of any one of the colors does not coincide with the saturation point, the gain value is adjusted in accordance with the manner given by the display device.
- the adjustment of the gain value may be performed in an increasing or decreasing manner.
- the gain value may be raised or decreased in a single cycle, and the brightness of the display after rising or decreasing is continuously increased; if the temperature is continuously increased, the gain value is continuously increased or decreased.
- the value if reduced for the first time after a continuous increase, in turn reduces or increases the gain value by a unit value and ends the cycle.
- the relationship between the gain value and the display brightness can be utilized to quickly adjust the gain value to the level of the saturation point, and the calculation of the saturation point is not required in advance, which contributes to the improvement of the processing efficiency.
- FIG. 4 is a structural block diagram of a test apparatus of a display device in an embodiment of the present application.
- the test equipment includes:
- the first adjusting unit 42 is configured to adjust the gain value of each color in the white balance parameter of the display device to a respective saturation point before the testing mechanism 41 tests the brightness uniformity.
- the first adjusting unit 42 can be specifically configured to perform the process of step 10 above
- the testing mechanism 41 can be specifically configured to perform the process of step 30 above, and thus each may have a corresponding structure and function.
- the testing mechanism 41 may include a platform for fixing the display device, a signal source and a connection line for providing power input and display signal input, and a light intensity detector capable of collecting light intensity at a predetermined distance above the display plane of the display device. And the logical operator used to calculate the test indicator, etc., and will not be described here.
- the first adjusting unit 42 may specifically include the following specific structures not shown in the drawings:
- An acquiring module configured to acquire a preset picture signal input to the display device
- a calculation module configured to calculate a saturation point of a gain value of each color according to the preset picture signal obtained by the acquiring module
- a determining module configured to determine whether a gain value of each color is consistent with a respective saturation point obtained by the computing module
- the adjustment module is configured to adjust the gain value of the color to the saturation point in the white balance parameter when the gain value of any one of the colors does not coincide with the saturation point.
- the testing apparatus of the embodiment of the present application may further include a second adjusting unit 43 not shown in the drawing, and the second adjusting unit 43 is configured to: before the testing mechanism 41 tests the brightness uniformity of the display device, The brightness-related parameter whose preset value differs by more than a predetermined threshold is adjusted to a state corresponding to the maximum display brightness.
- the second adjustment unit 43 may be specifically configured to perform the process of the foregoing step 20, and thus may have corresponding structures and functions, and details are not described herein again.
- the brightness-related parameter includes any one or more of the following: 1 light-emitting brightness of the backlight in the display device; 2 light-transmitting brightness of the display panel in the display device; 3 Display contrast of the display device.
- FIG. 5 is a structural block diagram of a testing device of a display device in still another embodiment of the present application.
- the test apparatus includes the above-mentioned test mechanism 41, the first adjustment unit 42, and the second adjustment unit 43. It can be seen that the first adjustment unit 42 and the second adjustment unit 43 may not have a connection relationship. Work independently.
- the testing device of the embodiment of the present application may include a processor and a memory storing a specific program, so that the functions of the first adjusting unit 42 and the second adjusting unit 43 may be executed by the processor in a program in the memory.
- the first adjusting unit 42 and the second adjusting unit 43 may also be implemented by a processing circuit of an analog signal and/or a digital signal or a combination thereof, which is not limited in this application.
- the embodiment of the present application may adjust the gain value in an increasing or decreasing manner.
- the gain value may be raised or decreased in a single cycle, and the brightness of the display after rising or decreasing is continuously increased; if the temperature is continuously increased, the gain value is continuously increased or decreased.
- the value if reduced for the first time after a continuous increase, in turn reduces or increases the gain value by a unit value and ends the cycle.
- the terms “mounted,” “connected,” and “connected” are used in a broad sense, and may be, for example, a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be directly connected, or it can be connected indirectly through an intermediate medium, which can be the internal connection of two components.
- the specific meanings of the above terms in the present application can be understood on a case-by-case basis.
- FIG. 6 is a block diagram showing the structure of a test apparatus of a display device according to Embodiment 5 of the present application.
- the test device of the display device includes: a processor 601, a memory 602, a communication interface 603, and a bus 604;
- the processor 601, the memory 602, and the communication interface 603 complete communication with each other through the bus 604;
- the communication interface 603 is used for information transmission between the test device and a communication device of the display device;
- the processor 601 is configured to invoke logic instructions in the memory 602 to perform the following methods;
- the gain values of each of the white balance parameters of the display device are adjusted to respective saturation points; the brightness uniformity of the display device is tested.
- the embodiment discloses a computer program, including program code, where the program code is used to perform the following operations:
- the gain values of each of the white balance parameters of the display device are adjusted to respective saturation points; the brightness uniformity of the display device is tested.
- This embodiment discloses a storage medium for storing a computer program as described in the foregoing embodiments.
- the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
- the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
- test apparatus and the like of the display device described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical. Unit, which can be located in one place, or It can also be distributed to multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without deliberate labor.
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Abstract
一种显示装置的测试方法和测试设备，该测试方法包括：调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点（10）；测试所述显示装置的亮度均匀性（30）。该测试设备包括：测试机构（41），用于测试显示装置的亮度均匀性；第一调整单元（42），用于在所述测试机构测试显示装置的亮度均匀性之前，调整所述显示装置的白平衡参数中每种颜色的增益值至各自的饱和点。可以改善现有显示装置在测试过程中的默认设置会降低亮度均匀性指标的测试结果的问题，有助于提高亮度均匀性的测试结果的准确性，降低对合格产品的误判而导致的损失。
Description
交叉引用
本申请引用于2015年11月26日提交的专利名称为“显示装置的测试方法和测试设备”的第2015108374572号中国专利申请，其通过引用被全部并入本申请。
本申请的实施例涉及显示技术，尤其涉及一种显示装置的测试方法和测试设备。
现有显示装置的性能参数中，亮度的均匀性是一项重要而常用的光学指标。例如，在液晶电视开发、测试、光学部品进行二元化导入阶段，都涉及测试液晶电视光学参数亮度均匀性指标，该光学指标的好坏与液晶电视导光板平整度有直接关系，该指标越好则液晶电视各区域的显示效果越好，各个区域画面效果与中心点差异越小。
在实现本申请过程中，发明人发现现有技术中至少存在如下问题：在现有技术中，该光学指标的测试通常针对出厂设置下的显示装置，而对不能通过测试的显示装置可能会进行维修或者报废处理。然而，不同显示装置的出厂设置往往会不同程度地降低显示亮度，因而会不同程度地降低该光学指标的测试结果。比如，在出厂设置中的白平衡校正中，可能会降低显示装置10％～20％的最大亮度，而这有可能导致原本满足亮度均匀性指标要求的显示装置被测定为不合格产品而被送往维修或报废，造成不必要的损失。
申请内容
本申请的目的在于，提供一种显示装置的测试方法和测试设备，可以改善现有显示装置在测试过程中的默认设置会降低亮度均匀性指标的测
试结果的问题。
第一方面，本申请的实施例提供了一种显示装置的测试方法，包括：
调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点；
测试所述显示装置的亮度均匀性。
可选地，在所述测试所述显示装置的亮度均匀性之前，还包括：
将所述显示装置的所有与预设值相差超过预定阈值的亮度相关参数调整至使显示亮度最大时的状态。
可选地，所述亮度相关参数包括下述的任意一项或多项：
显示装置中的背光源的发光亮度；
显示装置中的显示面板的透光亮度；
显示装置的显示对比度。
可选地，所述亮度相关参数的预定阈值为显示装置的出厂预设值。
可选地，所述调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点，包括：
获取输入至显示装置的预设画面信号；
根据所述预设画面信号计算每种颜色的增益值的饱和点；
判断每一种颜色的增益值是否与各自的饱和点一致；
若任一种颜色的增益值与其饱和点不一致，则在白平衡参数中将该种颜色的增益值调整至该饱和点。
第二方面，本申请的实施例还提供了一种显示装置的测试设备，包括：
测试机构，用于测试显示装置的亮度均匀性；
第一调整单元，用于在所述测试机构测试显示装置的亮度均匀性之前，调整所述显示装置的白平衡参数中每种颜色的增益值至各自的饱和点。
可选地，所述测试设备还包括：
第二调整单元，用于在所述测试机构测试显示装置的亮度均匀性之前，将所有与预设值相差超过预定阈值的亮度相关参数调整至与显示亮度最大相对应的状态。
可选地，所述亮度相关参数包括下述的任意一项或多项：
显示装置中的背光源的发光亮度；
显示装置中的显示面板的透光亮度；
显示装置的显示对比度。
可选地，所述亮度相关参数的预定阈值为显示装置的出厂预设值。
可选地，所述第一调整单元包括：
获取模块，用于获取输入至显示装置的预设画面信号；
计算模块，用于根据所述获取模块得到的预设画面信号计算每种颜色的增益值的饱和点；
判断模块，用于判断每一种颜色的增益值是否与所述计算模块得到的各自的饱和点一致；
调整模块，用于在任一种颜色的增益值与其饱和点不一致时，在白平衡参数中将该种颜色的增益值调整至该饱和点。
第三方面，本申请的实施例还提供了一种显示装置的测试设备，包括：
处理器、存储器、通信接口和总线；其中，
所述处理器、存储器、通信接口通过所述总线完成相互间的通信；
所述通信接口用于该测试设备与显示装置的通信设备之间的信息传输；
所述处理器用于调用所述存储器中的逻辑指令，以执行如下方法：
调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点；测试所述显示装置的亮度均匀性。
第四方面，本申请的实施例还提供了一种计算机程序，包括程序代码，所述程序代码用于执行如下操作：
所述处理器用于调用所述存储器中的逻辑指令，以执行如下方法：
调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点；测试所述显示装置的亮度均匀性。
第五方面，本申请的实施例还提供了一种存储介质，用于存储如前所述的计算机程序。
本申请实施例提供的显示装置的测试方法通过在测试显示装置的亮度均匀性之前先将白平衡参数中每种颜色的增益值调整至各自的饱和点，消除了出厂设置中的白平衡校正对亮度均匀性的测试结果的影响。由此，在显示装置具有相对较大的亮度的条件下，亮度均匀性的测试结果可以更
加准确，该项光学指标的测试结果也可以较现有技术而升高。可见，本申请有助于提高亮度均匀性的测试结果的准确性，降低对合格产品的误判而导致的损失。
图1是本申请一个实施例中一种显示装置的测试方法的步骤流程示意图；
图2是本申请又一实施例中一种显示装置的测试方法的步骤流程示意图；
图3是本申请一个实施例中一种调整白平衡参数的步骤流程示意图；
图4是本申请一个实施例中一种显示装置的测试设备的结构框图；
图5是本申请又一实施例中一种显示装置的测试设备的结构框图；
图6是本申请又一实施例中一种显示装置的测试设备的结构框图。
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
实施例一
图1是本申请实施例提供的一种显示装置的测试方法的步骤流程示意图。参见图1，该方法包括：
步骤10：调整白平衡参数中每种颜色的增益值至各自的饱和点；
步骤30：测试显示装置的亮度均匀性。
可以理解的是，本申请实施例所述的显示装置可以为显示面板、电子纸、手机、平板电脑、电视机、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件；由此，本申请实施例的方法可以用于上述任意一种产品或部件的测试工序当中。
在上述步骤30中可以理解的是，显示装置的亮度均匀性的测试属于
显示装置的测试工序中的一部分。举例来说，显示装置的亮度均匀性的测试过程可以具体按照下述方式进行：首先，向显示装置提供电源输入和显示信号输入，使得显示装置可以显示单色画面；然后，利用距离显示平面为预定距离(如1～20cm)的光强探测器测量显示平面上每一位置处的出光强度；最后，对所有位置处的出光强度进行均匀度的计算，并通过与标准值的比较来得到显示装置的亮度均匀性的测试指标。然而，在本申请的其他实施例中，步骤30可以参照现有技术通过其他具体实现方式来进行显示装置的亮度均匀性的测试，本申请对此不做限制。
在上述步骤10中可以理解的是，所述的白平衡参数例如可以包括红色增益值、绿色增益值和蓝色增益值，而上述饱和点则分别指的是显示亮度尽可能大的条件下的红色增益值、绿色增益值和蓝色增益值。当然，视显示装置类型的不同，调整的具体过程也可以有相应的具体形式，本申请对此不做限制。其中可以理解的是，白平衡参数可能会在显示装置的制作完成后进行过标准化的设置，因而在一般条件下会偏离上述饱和点。由此，步骤10的操作可以在亮度均匀性的测试前将白平衡参数中每种颜色的增益值调整至各自的饱和点，因而可以消除白平衡校正对亮度均匀性的测试结果的影响。可以看出，在显示装置具有相对较大的亮度的条件下亮度均匀性的测试结果可以更加准确，该项光学指标的测试结果也可以较现有技术而升高。由此可见，本申请实施例有助于提高亮度均匀性的测试结果的准确性，降低对合格产品的误判而导致的损失。
实施例二
在实施例1的基础之上，本申请实施例还提供另一种显示装置的测试方法。图2是本申请实施例中一种显示装置的测试方法的步骤流程示意图，参见图2，该测试方法包括：
步骤10：调整白平衡参数中每种颜色的增益值至各自的饱和点；
步骤20：将显示装置的所有与预设值相差超过预定阈值的亮度相关参数调整至使显示亮度最大时的状态；
步骤30：测试所述显示装置的亮度均匀性。
需要说明的是，步骤10与步骤20均是执行于测试显示装置的亮度均匀性之前，而彼此间的执行顺序可以不分先后。
可以理解的是，本申请实施例的测试方法除了包括上述步骤10和步骤30之外，还包括了步骤20：将显示装置的所有与预设值相差超过预定阈值的亮度相关参数调整至使显示亮度最大时的状态。其中需要说明的是，“亮度相关参数”指的是显示装置中任意一种或多种对显示亮度有影响的设定参数；比如，在该显示装置具体为液晶电视时，上述亮度相关参数包括下述的任意一项或多项：①显示装置中的背光源的发光亮度；②显示装置中的显示面板的透光亮度；③显示装置的显示对比度。可见，这些参数的调整可以改变显示面板总体上的显示亮度，因而对亮度均匀性的测试产生影响。
还需要说明的是，上述预设值可以是预先标定的显示亮度最大时的设定值，也可以是显示装置出厂预设值，而预设阈值为预先设定的容许偏离预设值的范围。由此，可以仅在亮度相关参数偏离设定值超过预定范围时再对其进行调整，以简化步骤流程，并避免显示装置的工作状态造成不良影响。当然，视显示装置类型的不同，调整的具体过程也可以有相应的具体形式，本申请对此不做限制。
可以理解的是，将亮度相关参数调整至使显示亮度最大时的状态有利于使得测试亮度均匀性时显示装置的显示亮度的整体提升，因而同样有助于提高亮度均匀性的测试结果的准确性，降低对合格产品的误判而导致的损失。
实施例三
作为一种具体的示例，图3是本申请一个实施例中一种调整白平衡参数的步骤流程示意图。参见图3，本申请实施例中的上述步骤10：调整白平衡参数中每种颜色的增益值至各自的饱和点，可以具体包括如图2所示的下述步骤：
步骤101：获取输入至显示装置的预设画面信号；
步骤102：根据预设画面信号计算每种颜色的增益值的饱和点；
步骤103：判断每一种颜色的增益值是否与各自的饱和点一致；
步骤104：在任一种颜色的增益值与其饱和点不一致时，在白平衡参数中将该种颜色的增益值调整至该饱和点。
举例来说，上述预设画面信号可以是现有技术中的极限八灰度九窗口
信号，因而本申请实施例中可以先在步骤101中对该预设画面信号进行数值采样，再于步骤102中以现有的饱和点计算方式计算得到每种颜色的增益值的饱和点。从而，步骤103可以分别判断每一种颜色的增益值是否与各自的饱和点一致，具体的判断方式例如可以是判断两者之间的差值是否小于预定水平；而步骤104中可以在步骤103判定任一种颜色的增益值与其饱和点不一致时，按照显示装置所给定的方式进行增益值的调整。
此外，在本申请的其他实施方式中，在调整任一种颜色的增益值至饱和点时，可以采用递增或者递减的方式进行增益值的调整。具体来说，可以在一次循环过程中将增益值升高或降低单位数值，并判断升高或降低后的显示亮度是否在连续升高；若持续升高则继续将增益值升高或降低单位数值，若在持续升高后首次降低则反过来将增益值降低或升高单位数值并结束循环。
由此，可以利用增益值与显示亮度之间的关系，快速将增益值调整到饱和点的水平，而且不需要事先进行饱和点的计算，有助于处理效率的提升。
实施例四
基于同样的发明构思，图4是本申请实施例中一种显示装置的测试设备的结构框图。参见图4，该测试设备包括：
测试机构41，用于测试显示装置的亮度均匀性；
第一调整单元42，用于在测试机构41测试亮度均匀性之前，调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点。
可以理解的是，该第一调整单元42可以具体用于执行上述步骤10的流程，而测试机构41可以具体用于执行上述步骤30的流程，因此各自可以具有对应的结构与功能。比如，该测试机构41可以包括用于固定显示装置的平台、用于提供电源输入和显示信号输入的信号源及连接线、可以在显示装置的显示平面上方预定距离采集出光强度的光强探测器，以及用于计算测试指标的逻辑运算器等等，在此不再赘述。
作为一种示例，上述第一调整单元42可以具体包括附图中未示出的下述具体结构：
获取模块，用于获取输入至显示装置的预设画面信号；
计算模块，用于根据所述获取模块得到的预设画面信号计算每种颜色的增益值的饱和点；
判断模块，用于判断每一种颜色的增益值是否与所述计算模块得到的各自的饱和点一致；
调整模块，用于在任一种颜色的增益值与其饱和点不一致时，在白平衡参数中将该种颜色的增益值调整至该饱和点。
可以理解的是，上述各模块可以分别用于执行上述步骤101至步骤104的流程，因此可以具有对应的结构与功能，在此不再赘述。
而且，本申请实施例的测试设备可以还包括附图中未示出的第二调整单元43，该第二调整单元43用于在上述测试机构41测试显示装置的亮度均匀性之前，将所有与预设值相差超过预定阈值的亮度相关参数调整至与显示亮度最大相对应的状态。可以理解的是，该第二调整单元43可以具体用于执行上述步骤20的流程，因此可以具有对应的结构与功能，在此不再赘述。其中，在该显示装置具体为液晶电视时，上述亮度相关参数包括下述的任意一项或多项：①显示装置中的背光源的发光亮度；②显示装置中的显示面板的透光亮度；③显示装置的显示对比度。
作为一种具体的示例，图5是本申请又一个实施例中一种显示装置的测试设备的结构框图。参见图5，该测试设备包括上述测试机构41、第一调整单元42和上述第二调整单元43，其中可以看出的是，第一调整单元42与第二调整单元43可以不具有连接关系而分别独立地工作。可以理解的是，本申请实施例的测试设备可以包括处理器和存储有特定程序的存储器，从而上述第一调整单元42和上述第二调整单元43的功能可以由处理器运行存储器中的程序来实现；或者，上述第一调整单元42和上述第二调整单元43也可以由模拟信号和/或数字信号的处理电路或其组合来实现，本申请对此不做限制。
此外，在调整任一种颜色的增益值至饱和点时，本申请实施例可以采用递增或者递减的方式进行增益值的调整。具体来说，可以在一次循环过程中将增益值升高或降低单位数值，并判断升高或降低后的显示亮度是否在连续升高；若持续升高则继续将增益值升高或降低单位数值，若在持续升高后首次降低则反过来将增益值降低或升高单位数值并结束循环。由
此，可以利用增益值与显示亮度之间的关系，快速将增益值调整到饱和点的水平，而且不需要事先进行饱和点的计算，有助于处理效率的提升。
在本申请的描述中需要说明的是，术语“上”、“下”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请的说明书中，说明了大量具体细节。然而，能够理解，本申请的实施例可以在没有这些具体细节的情况下实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
类似地，应当理解，为了精简本申请公开并帮助理解各个申请方面中的一个或多个，在上面对本申请的示例性实施例的描述中，本申请的各个特征有时被一起分组到单个实施例、图、或者对其的描述中。然而，并不应将该公开的方法解释呈反映如下意图：即所要求保护的本申请要求比在每个权利要求中所明确记载的特征更多的特征。更确切地说，如权利要求书所反映的那样，申请方面在于少于前面公开的单个实施例的所有特征。因此，遵循具体实施方式的权利要求书由此明确地并入该具体实施方式，其中每个权利要求本身都作为本申请的单独实施例。
应该注意的是上述实施例对本申请进行说明而不是对本申请进行限制，并且本领域技术人员在不脱离所附权利要求的范围的情况下可设计出替换实施例。在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本申请可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使
用不表示任何顺序。可将这些单词解释为名称。
实施例五
图6是示出本申请实施例五的显示装置的测试设备的结构框图。
参照图6，所述显示装置的测试设备，包括：处理器(processor)601、存储器(memory)602、通信接口(Communications Interface)603和总线604；
其中，
所述处理器601、存储器602、通信接口603通过所述总线604完成相互间的通信；
所述通信接口603用于该测试设备与显示装置的通信设备之间的信息传输；
所述处理器601用于调用所述存储器602中的逻辑指令，以执行如下方法；
调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点；测试所述显示装置的亮度均匀性。
实施例六
参加图1，本实施例公开一种计算机程序，包括程序代码，所述程序代码用于执行如下操作：
调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点；测试所述显示装置的亮度均匀性。
实施例七
本实施例公开一种存储介质，用于存储如前述实施例所述的计算机程序。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所描述的显示装置的测试设备等实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或
者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。
最后应说明的是：以上各实施例仅用以说明本申请的实施例的技术方案，而非对其限制；尽管参照前述各实施例对本申请的实施例进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请的实施例各实施例技术方案的范围。
Claims (13)
- 一种显示装置的测试方法，其特征在于，包括：调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点；测试所述显示装置的亮度均匀性。
- 根据权利要求1所述的方法，其特征在于，在所述测试所述显示装置的亮度均匀性之前，还包括：将所述显示装置的所有与预设值相差超过预定阈值的亮度相关参数调整至使显示亮度最大时的状态。
- 根据权利要求2所述的方法，其特征在于，所述亮度相关参数包括下述的任意一项或多项：显示装置中的背光源的发光亮度；显示装置中的显示面板的透光亮度；显示装置的显示对比度。
- 根据权利要求2或3所述的方法，其特征在于，所述亮度相关参数的预定阈值为显示装置的出厂预设值。
- 根据权利要求1-4中的任意一项所述的方法，其特征在于，所述调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点，包括：获取输入至显示装置的预设画面信号；根据所述预设画面信号计算每种颜色的增益值的饱和点；判断每一种颜色的增益值是否与各自的饱和点一致；若任一种颜色的增益值与其饱和点不一致，则在白平衡参数中将该种颜色的增益值调整至该饱和点。
- 一种显示装置的测试设备，其特征在于，包括：测试机构，用于测试显示装置的亮度均匀性；第一调整单元，用于在所述测试机构测试显示装置的亮度均匀性之前，调整所述显示装置的白平衡参数中每种颜色的增益值至各自的饱和点。
- 根据权利要求6所述的测试设备，其特征在于，还包括：第二调整单元，用于在所述测试机构测试显示装置的亮度均匀性之前，将所有与预设值相差超过预定阈值的亮度相关参数调整至与显示亮度 最大相对应的状态。
- 根据权利要求7所述的测试设备，其特征在于，所述亮度相关参数包括下述的任意一项或多项：显示装置中的背光源的发光亮度；显示装置中的显示面板的透光亮度；显示装置的显示对比度。
- 根据权利要求7或8所述的测试设备，其特征在于，所述亮度相关参数的预定阈值为显示装置的出厂预设值。
- 根据权利要求6-9中任意一项所述的测试设备，其特征在于，所述第一调整单元包括：获取模块，用于获取输入至显示装置的预设画面信号；计算模块，用于根据所述获取模块得到的预设画面信号计算每种颜色的增益值的饱和点；判断模块，用于判断每一种颜色的增益值是否与所述计算模块得到的各自的饱和点一致；调整模块，用于在任一种颜色的增益值与其饱和点不一致时，在白平衡参数中将该种颜色的增益值调整至该饱和点
- 一种显示装置的测试设备，其特征在于，包括：处理器、存储器、通信接口和总线；其中，所述处理器、存储器、通信接口通过所述总线完成相互间的通信；所述通信接口用于该测试设备与显示装置的通信设备之间的信息传输；所述处理器用于调用所述存储器中的逻辑指令，以执行如下方法；调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点；测试所述显示装置的亮度均匀性。
- 一种计算机程序，其特征在于，包括程序代码，所述程序代码用于执行如下操作：调整显示装置的白平衡参数中每种颜色的增益值至各自的饱和点；测试所述显示装置的亮度均匀性。
- 一种存储介质，用于存储如权利要求12所述的计算机程序。
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| CN115914801A (zh) * | 2023-02-21 | 2023-04-04 | 哈尔滨学院 | 一种多光延时摄影控制系统 |
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