TW201709176A - Method for driving a display and display thereof - Google Patents
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本發明係有關於一種驅動顯示器的方法，特別係關於一種在顯示器開啟面板自更新功能後，能夠維持畫面品質之驅動顯示器的方法。The present invention relates to a method of driving a display, and more particularly to a method of driving a display capable of maintaining picture quality after the display panel is automatically updated.
在先前技術中，顯示器可根據主機端所提供的畫面資料來呈現影像。由於主機端所提供的畫面資料不一定會持續更新，而可能會停留在靜止的畫面當中，此時若主機端仍繼續計算並傳送相同的畫面資料給顯示器，則可能會造成運算資源及電量的浪費。為了避免在畫面靜止時，主機端仍持續運算產生不必要的畫面資料，有部分的顯示器即提供了面板自更新(Panel Self Refresh，PSR)的功能，也就是當主機端發現畫面資料並未更新時，主機端可以不再重新計算產生相同的畫面資料，而顯示器則可自行顯示先前所傳送的畫面資料，如此一來即可節省主機端的運算資源及電力浪費。In the prior art, the display can present an image according to the picture material provided by the host side. Since the picture data provided by the host side may not be continuously updated, it may stay in the still picture. If the host side continues to calculate and transmit the same picture data to the display, it may cause computing resources and power. waste. In order to avoid the need for continuous calculation of the host side to generate unnecessary picture data when the picture is still, some of the displays provide the function of Panel Self Refresh (PSR), that is, when the host side finds that the picture data is not updated. At the same time, the host side can no longer recalculate and generate the same picture data, and the display can display the previously transmitted picture data by itself, thereby saving the computing resources and power waste of the host side.
一般在開啟面板自更新功能後，為了能更進一步的節省電量，顯示器還會以較低的畫面更新率(frame rate)來顯示影像。例如在嵌入式顯示接口(embedded Display Port，eDP)1.3版本的規範當中，即規定在開啟面板自更新功能後，顯示器的畫面更新率會由原本的60赫茲(Hz)調降為40赫茲(Hz)。然而同樣的畫面資料以不同的畫面更新率顯示時，顯示面板所呈現的亮度也會跟著改變，進而影響影像呈現的品質。Generally, after the panel self-updating function is turned on, in order to further save power, the display will display images at a lower frame rate. For example, in the specification of the embedded display port (eDP) version 1.3, it is stipulated that after the panel self-updating function is turned on, the screen update rate of the display is reduced from the original 60 Hz (Hz) to 40 Hz (Hz). ). However, when the same picture data is displayed at different picture update rates, the brightness of the display panel will also change, which will affect the quality of the image presentation.
本發明之一實施例提供一種驅動顯示器的方法。方法包含主機端傳送複數個動態畫面資料至顯示器，顯示器之顯示面板根據第一伽瑪表顯示主機端所傳來之複數個動態畫面資料，主機端啟動顯示器之面板自更新(Panel Self Refresh，PSR)功能，及當顯示器之面板自更新功能被啟動後，顯示面板根據第二伽瑪表顯示至少一先前畫面資料。至少一先前畫面資料係儲存於顯示器之記憶體中，且至少一先前畫面資料包含主機端所傳來之複數動態畫面資料之至少一動態畫面資料。此外，相同之灰階值於第一伽瑪表及第二伽瑪表中會對應至不同之伽瑪電壓。One embodiment of the present invention provides a method of driving a display. The method comprises the host side transmitting a plurality of dynamic picture data to the display, the display panel of the display displaying the plurality of dynamic picture data transmitted by the host end according to the first gamma table, and the panel of the host side starting the display is self-updating (Panel Self Refresh, PSR) The function, and when the panel self-update function of the display is activated, the display panel displays at least one previous screen material according to the second gamma table. The at least one previous picture data is stored in the memory of the display, and the at least one previous picture data includes at least one dynamic picture data of the plurality of dynamic picture data transmitted by the host end. In addition, the same gray scale value will correspond to different gamma voltages in the first gamma table and the second gamma table.
本發明之另一實施例提供一種顯示器。顯示器包含顯示面板、影像源接口、記憶體、第一伽瑪表及第二伽瑪表。顯示面板用以顯示畫面資料，影像源接口用以與主機端連接以接收主機端傳來之畫面資料。記憶體用以儲存至少一先前畫面資料。第一伽瑪表及第二伽瑪表儲存於記憶體。當主機端傳送複數個動態畫面資料至顯示器時，顯示面板根據第一伽瑪表顯示主機端所傳來之複數個動態畫面資料；當顯示器之面板自更新功能被啟動後，顯示面板根據第二伽瑪表顯示至少一先前畫面資料，且至少一先前畫面資料包含主機端所傳來之複數個動態畫面資料之至少一動態畫面資料。相同之灰階值於第一伽瑪表及第二伽瑪表中會對應至不同之伽瑪電壓。Another embodiment of the present invention provides a display. The display comprises a display panel, an image source interface, a memory, a first gamma table and a second gamma table. The display panel is used to display screen data, and the image source interface is used to connect with the host end to receive the screen data transmitted from the host end. The memory is used to store at least one previous picture material. The first gamma table and the second gamma table are stored in the memory. When the host side transmits a plurality of dynamic picture data to the display, the display panel displays a plurality of dynamic picture data transmitted from the host end according to the first gamma table; when the display panel self-update function is activated, the display panel is according to the second The gamma table displays at least one previous picture data, and the at least one previous picture data includes at least one dynamic picture data of the plurality of dynamic picture data transmitted from the host end. The same gray scale value will correspond to different gamma voltages in the first gamma table and the second gamma table.
第1圖為本發明一實施例之顯示器100的示意圖。顯示器100包含顯示面板110、記憶體120及影像源接口130。顯示面板110係用以顯示畫面資料，其可為液晶顯示面板、有機二極體顯示面板或其他類型的顯示面板。顯示器100可透過影像源接口130與主機端H1相連。在部分實施例中，主機端可以是電腦中的圖形處理單元(Graphic Processing Unit，GPU)，抑或是其他能夠提供畫面資料的運算單元。FIG. 1 is a schematic diagram of a display 100 in accordance with an embodiment of the present invention. The display 100 includes a display panel 110, a memory 120, and an image source interface 130. The display panel 110 is used to display screen materials, which may be a liquid crystal display panel, an organic diode display panel, or other types of display panels. The display 100 can be connected to the host terminal H1 through the image source interface 130. In some embodiments, the host side may be a Graphic Processing Unit (GPU) in a computer, or another computing unit capable of providing picture data.
影像源接口130可接收主機端H1所傳來的畫面資料，在部分實施例中，影像源接口130可為嵌入式顯示接口(embedded Display Port，eDP)，而在其他實施例中，影像源接口130亦可為與其他影像傳輸規格相容的影像源接口。The image source interface 130 can receive the image data transmitted from the host end H1. In some embodiments, the image source interface 130 can be an embedded display port (eDP), and in other embodiments, the image source interface The 130 can also be an image source interface that is compatible with other image transmission specifications.
主機端H1所產生之複數個動態畫面資料，例如動態畫面資料I1至I10，可依序經由影像源接口130傳送至顯示器100，而當主機端H1依序傳送動態畫面資料I1至I10到顯示器100時，顯示面板110會根據第一伽瑪表依序顯示動態畫面資料I1至I10，第一伽碼表可儲存於記憶體120當中。The plurality of dynamic picture data generated by the host end H1, for example, the dynamic picture data I1 to I10, may be sequentially transmitted to the display 100 via the image source interface 130, and when the host end H1 sequentially transmits the dynamic picture data I1 to I10 to the display 100. The display panel 110 displays the dynamic picture data I1 to I10 in sequence according to the first gamma table, and the first gamma table can be stored in the memory 120.
此外，當顯示器100接收到動態畫面資料時，顯示器100可將最新接收到的動態畫面資料作為先前畫面資料並儲存在記憶體120當中。舉例來說，當顯示器100接收到動態畫面資料I1至I5時，顯示器100可以將動態畫面資料I1至I5作為先前畫面資料並儲存在記憶體120當中，而當顯示器100接收到動態畫面資料I6時，顯示器100即可將記憶體120中儲存動態畫面資料I1的記憶體空間釋放出來，並將最新收到的動態畫面資料I6存入記憶體120，使得記憶體120中所儲存的先前畫面資料維持在最近接收之五個動態畫面資料I2至I6。在部分實施例中，顯示器100也可依據系統硬體的規格而僅儲存一個或更多的先前畫面資料。In addition, when the display 100 receives the dynamic picture material, the display 100 may use the newly received dynamic picture data as the previous picture data and store it in the memory 120. For example, when the display 100 receives the dynamic picture materials I1 to I5, the display 100 can use the dynamic picture materials I1 to I5 as the previous picture data and store them in the memory 120, and when the display 100 receives the dynamic picture data I6. The display 100 can release the memory space of the dynamic picture data I1 stored in the memory 120, and store the newly received dynamic picture data I6 in the memory 120, so that the previous picture data stored in the memory 120 is maintained. The five dynamic picture data I2 to I6 received recently. In some embodiments, the display 100 can also store only one or more previous picture materials depending on the specifications of the system hardware.
如此一來，當主機端H1啟動顯示器100之面板自更新功能後，顯示面板110即可顯示記憶體120中所儲存的至少一先前畫面資料，例如為先前所儲存的動態畫面資料I2至I6，而無須根據主機端H1所傳來的動態畫面資料來顯示畫面。In this way, when the host H1 starts the panel self-updating function of the display 100, the display panel 110 can display at least one previous screen data stored in the memory 120, for example, the previously stored dynamic picture data I2 to I6. There is no need to display the picture according to the dynamic picture data transmitted from the host H1.
在部分實施例中，由於影像源接口130為符合嵌入式顯示接口之1.3版本之規範的接口，且嵌入式顯示接口之1.3版本的規範中已包含了有關面板自更新功能的相關內容，因此主機端H1可直接透過影像源接口130中的控制訊號線路來啟動顯示器100之面板自更新功能，然而在本發明的其他實施例中，主機端亦可透過其他方式啟動顯示器100之面板自更新功能。In some embodiments, since the image source interface 130 is an interface conforming to the specification of the 1.3 version of the embedded display interface, and the specification of the 1.3 version of the embedded display interface already includes related content of the panel self-updating function, the host The terminal H1 can directly activate the panel self-updating function of the display 100 through the control signal line in the image source interface 130. However, in other embodiments of the present invention, the host side can also activate the panel self-updating function of the display 100 by other means.
此外，當顯示器100之面板自更新功能尚未被啟動，即當主機端H1仍會傳送動態畫面資料至顯示器100時，顯示面板110可根據第一伽瑪表並以第一畫面更新率(frame rate)顯示主機端H1所傳來的動態畫面資料。而為了在面板自更新功能啟動之後，能夠節省更多的電量，當顯示器100之面板自更新功能被啟動後，顯示面板110則會以第二畫面更新率顯示儲存在記憶體120當中的先前畫面資料，且第一畫面更新率會大於第二畫面更新率。In addition, when the panel self-update function of the display 100 has not been activated, that is, when the host terminal H1 still transmits the dynamic picture data to the display 100, the display panel 110 can be based on the first gamma table and the first screen update rate (frame rate) ) Display the dynamic picture data from the host H1. In order to save more power after the panel self-updating function is started, when the panel self-update function of the display 100 is activated, the display panel 110 displays the previous screen stored in the memory 120 at the second screen update rate. Data, and the first picture update rate will be greater than the second picture update rate.
以嵌入式顯示接口(embedded Display Port，eDP)之1.3版本的規範為例，在尚未開啟面板自更新功能時之第一畫面更新率可能是60赫茲(Hz)，而在開啟面板自更新功能後之第二畫面更新率可能是40赫茲(Hz)，當然，在其他的實施例中，第一畫面更新率及第二畫面更新率亦可能分別為其他的頻率。Taking the specification of the 1.3 version of the embedded display port (eDP) as an example, the first picture update rate may be 60 Hz when the panel self-updating function is not enabled, and after the panel self-updating function is enabled. The second picture update rate may be 40 Hz. Of course, in other embodiments, the first picture update rate and the second picture update rate may also be other frequencies.
由於不同的畫面更新率可能會顯示面板110在呈現相同畫面時有不同的亮度，而造成影像品質下降的問題，因此在顯示器100啟動面板自更新功能之後，會根據第二伽瑪表並以第二畫面更新率來顯示儲存在記憶體120當中的先前畫面資料。第二伽瑪表可儲存於記憶體120當中。雖然在第1圖中，記憶體120係以單一功能方塊表示，然而在其他實施例當中，記憶體120亦可包含不同的區塊，並設置於顯示器100內的不同位置，以便於分別儲存先前畫面資料及伽瑪表。Since the different picture update rate may have different brightness when the display panel 110 presents the same picture, causing a problem of image quality degradation, after the display panel 100 starts the panel self-updating function, it will be based on the second gamma table and The two-picture update rate displays the previous picture material stored in the memory 120. The second gamma table can be stored in the memory 120. Although in FIG. 1 the memory 120 is represented by a single functional block, in other embodiments, the memory 120 may also include different blocks and be disposed at different locations within the display 100 to facilitate storage of previous locations. Picture data and gamma table.
在第一伽瑪表與第二伽瑪表中，相同之灰階值可對應至不同之伽瑪電壓，因此當畫面資料中所記錄的灰階值相同時，顯示面板110根據第一伽瑪表所對應之伽瑪電壓所呈現出的亮度會與顯示面板110根據第二伽瑪表所對應之伽瑪電壓所呈現出的亮度不同。In the first gamma table and the second gamma table, the same gray scale value may correspond to different gamma voltages, so when the gray scale values recorded in the picture material are the same, the display panel 110 is based on the first gamma The brightness of the gamma voltage corresponding to the table may be different from the brightness exhibited by the display panel 110 according to the gamma voltage corresponding to the second gamma table.
若以第一畫面更新率是60赫茲(Hz)，第二畫面更新率是40赫茲(Hz)為例，為了避免顯示面板以較低的畫面更新率播放畫面資料時所呈現的亮度會比顯示面板以較高的畫面更新率播放相同畫面資料時所呈現的亮度大，而導致影像畫面品質不佳，在第一伽瑪表中，灰階值G所對應之第一伽瑪電壓VG1 之絕對值會大於同一灰階值G於第二伽瑪表中所對應之第二伽瑪電壓VG2 的絕對值，如此一來，即可補償因為畫面更新率不同所導致顯示面板110亮度不同的差異。在部分實施例中，顯示面板110可能會需要複數個伽碼電壓來驅動畫素，因此在第一伽碼表及第二伽瑪表中還會記錄各灰階值與顯示面板110所需的複數個伽碼電壓之間的對應關係。申言之，第一伽瑪表及第二伽瑪表可根據顯示面板110的特性來建立，因此顯示面板110根據第一伽瑪表顯示動態畫面資料的亮度實質上可與顯示面板110根據第二伽瑪表顯示相同動態畫面資料的亮度相等。If the first screen update rate is 60 Hz (Hz) and the second screen update rate is 40 Hz (Hz), in order to avoid the brightness of the display panel when the screen material is played at a lower screen update rate, the brightness will be displayed. When the panel plays the same picture data with a high picture update rate, the brightness is large, and the image picture quality is not good. In the first gamma table, the first gamma voltage V G1 corresponding to the gray level value G is The absolute value is greater than the absolute value of the second gamma voltage V G2 corresponding to the same gray scale value G in the second gamma table, so that the brightness of the display panel 110 is different due to different screen update rates. difference. In some embodiments, the display panel 110 may require a plurality of gamma voltages to drive the pixels, so each gray scale value and the display panel 110 are also recorded in the first gamma table and the second gamma table. The correspondence between a plurality of gamma voltages. The first gamma table and the second gamma table can be established according to the characteristics of the display panel 110. Therefore, the brightness of the dynamic picture data displayed by the display panel 110 according to the first gamma table can be substantially compared with the display panel 110. The two gamma table shows that the brightness of the same dynamic picture data is equal.
由於在顯示器100開啟面板自更新功能前後，顯示面板110會根據不同的伽瑪表來查找出對應的伽瑪電壓，因此即便顯示器100在開啟面板自更新功能前後，顯示面板110會以不同的畫面更新率顯示畫面資料，顯示面板110在呈現相同畫面資料的時候，仍然會維持相同的亮度，而不會因為畫面更新率不同，造成影像品質下降的問題。Since the display panel 110 searches for a corresponding gamma voltage according to different gamma tables before and after the panel 100 is turned on, the display panel 110 may have a different screen even before and after the panel self-updating function is turned on. The update rate displays the screen data, and the display panel 110 maintains the same brightness while presenting the same picture data, without causing a problem of image quality degradation due to different picture update rates.
第2圖為本發明一實施例之驅動顯示器100的方法200的流程圖。方法200包含步驟S210至S240：2 is a flow chart of a method 200 of driving display 100 in accordance with an embodiment of the present invention. Method 200 includes steps S210 through S240:
S210： 主機端H1傳送複數個動態畫面資料至顯示器100；S210: The host end H1 transmits a plurality of dynamic picture data to the display 100;
S220： 顯示器100之顯示面板110根據第一伽瑪表顯示複數個動態畫面資料；S220: The display panel 110 of the display 100 displays a plurality of dynamic picture data according to the first gamma table;
S230： 主機端H1啟動顯示器100之面板自更新功能；S230: The host end H1 starts the panel self-updating function of the display 100;
S240： 當顯示器100之面板自更新功能被啟動後，顯示面板110根據第二伽瑪表顯示先前畫面資料。S240: When the panel self-update function of the display 100 is activated, the display panel 110 displays the previous screen data according to the second gamma table.
根據驅動顯示器100的方法200，顯示器100即可在啟動面板自更新功能後，根據不同的伽瑪表來查找適當的伽瑪電壓以維持顯示面板110的亮度，而不會因為面板自更新功能啟動前後之畫面更新率的差異，導致顯示面板呈現的亮度有所差異，造成影像品質下降的問題。According to the method 200 of driving the display 100, the display 100 can search for an appropriate gamma voltage according to different gamma tables to maintain the brightness of the display panel 110 after starting the panel self-updating function, without starting the panel self-updating function. The difference in picture update rate between the front and the back causes the brightness of the display panel to be different, causing a problem of image quality degradation.
綜上所述，本發明之實施例所提供的顯示器及驅動顯示器的方法可在顯示器啟動面板自更新功能的前後根據不同的伽瑪表來查找適當的伽瑪電壓，使得顯示面板的亮度不會因為畫面更新率的改變而改變，因此能夠解決先前技術中，顯示器在啟動面板自更新功能的前後，由於畫面更新率的差異，導致影像品質下降的問題。 以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。In summary, the display and the method for driving the display provided by the embodiments of the present invention can find an appropriate gamma voltage according to different gamma tables before and after the display startup panel self-update function, so that the brightness of the display panel does not Since the screen update rate changes, it is possible to solve the problem in the prior art that the display quality is degraded due to the difference in the screen update rate before and after the startup of the panel self-updating function. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.
100‧‧‧顯示器
110‧‧‧顯示面板
120‧‧‧記憶體
130‧‧‧影像源接口
H1‧‧‧主機端
I1-I10‧‧‧畫面資料
200‧‧‧方法
S210-S240‧‧‧步驟100‧‧‧ display
110‧‧‧ display panel
120‧‧‧ memory
130‧‧‧Image source interface
H1‧‧‧Host side
I1-I10‧‧‧ screen material
200‧‧‧ method
S210-S240‧‧‧Steps
第1圖為本發明一實施例之顯示器的示意圖。 第2圖為本發明一實施例之驅動第1圖之顯示器的方法流程圖1 is a schematic view of a display according to an embodiment of the present invention. 2 is a flow chart of a method for driving the display of FIG. 1 according to an embodiment of the present invention
200‧‧‧方法 200‧‧‧ method
S210-S240‧‧‧步驟 S210-S240‧‧‧Steps
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104126771A TW201709176A (en) | 2015-08-18 | 2015-08-18 | Method for driving a display and display thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104126771A TW201709176A (en) | 2015-08-18 | 2015-08-18 | Method for driving a display and display thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW201709176A true TW201709176A (en) | 2017-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW104126771A TW201709176A (en) | 2015-08-18 | 2015-08-18 | Method for driving a display and display thereof |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TW201709176A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI695369B (en) * | 2017-12-26 | 2020-06-01 | 瑞鼎科技股份有限公司 | Display mode conversion method applied to display driving circuit |
| TWI723779B (en) * | 2020-02-19 | 2021-04-01 | 宏碁股份有限公司 | Display device |
-
2015
- 2015-08-18 TW TW104126771A patent/TW201709176A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI695369B (en) * | 2017-12-26 | 2020-06-01 | 瑞鼎科技股份有限公司 | Display mode conversion method applied to display driving circuit |
| TWI723779B (en) * | 2020-02-19 | 2021-04-01 | 宏碁股份有限公司 | Display device |
| US11189238B2 (en) | 2020-02-19 | 2021-11-30 | Acer Incorporated | Display device and electronic device |
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