TWI804152B - OLED panel driving method, OLED display and information processing device - Google Patents
OLED panel driving method, OLED display and information processing device Download PDFInfo
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Abstract
一種OLED面板驅動方法,其包括:在一OLED面板中設置一溫度感測器陣列;依該溫度感測器陣列感測到之一溫度陣列對一幀顯示資料進行一補償運算以產生一幀輸出顯示資料;以及依該幀輸出顯示資料驅動該OLED面板。 A method for driving an OLED panel, comprising: setting a temperature sensor array in an OLED panel; performing a compensation operation on a frame of display data according to a temperature array sensed by the temperature sensor array to generate a frame of output displaying data; and outputting the display data according to the frame to drive the OLED panel.
Description
本發明係關於OLED顯示器,尤指一種可對OLED面板因不同局部溫度所造成的畫面亮度不均勻現象進行補償的OLED面板驅動方法。The invention relates to an OLED display, in particular to an OLED panel driving method capable of compensating the non-uniform brightness of the picture caused by different local temperatures of the OLED panel.
OLED(organic light-emitting diode;有機發光二極體)顯示器已廣泛應用在現今的各種電子產品中。於操作時,各像素之有機發光二極體之導通電流係由對應的顯示資料決定。然而,當一有機發光二極體(organic light-emitting diode, OLED)的溫度改變時,即使驅動電壓相同,通過該有機發光二極體的電流量卻會與溫度成正相關,致使該OLED面板之畫面產生亮度不均勻的問題。OLED (organic light-emitting diode; organic light-emitting diode) displays have been widely used in various electronic products today. During operation, the conduction current of the OLED of each pixel is determined by the corresponding display data. However, when the temperature of an organic light-emitting diode (OLED) changes, even if the driving voltage is the same, the amount of current passing through the organic light-emitting diode will be positively correlated with the temperature, causing the OLED panel to There is a problem of uneven brightness on the screen.
為解決上述問題,現有技術中已有在OLED面板驅動積體電路的端部配置一個溫度感測器的技術方案,其係透過該溫度感測器內的訊號轉換器將一溫度類比訊號轉換為數位訊號,並據以統一對OLED面板的各像素電流進行補償。In order to solve the above problems, in the prior art, there is a technical solution of disposing a temperature sensor at the end of the OLED panel driving integrated circuit, which converts a temperature analog signal into a temperature analog signal through a signal converter in the temperature sensor. The digital signal is used to uniformly compensate the current of each pixel of the OLED panel.
然而,由於OLED面板,尤其是矽基的OLED面板,易受製程或電路布局的影響而使面板上的溫度呈現非均勻分佈,因此,上述的技術方案仍無法有效解決顯示畫面之亮度不均勻問題。However, since OLED panels, especially silicon-based OLED panels, are easily affected by the manufacturing process or circuit layout, the temperature on the panel is unevenly distributed. Therefore, the above-mentioned technical solutions still cannot effectively solve the problem of uneven brightness of the display screen. .
為解決上述問題,本領域亟需一種新穎的OLED面板驅動方法。In order to solve the above problems, there is an urgent need in the art for a novel OLED panel driving method.
本發明之一目的在於揭露一種OLED面板驅動方法,其可藉由一溫度感測器陣列量測一OLED面板的複數個顯示區塊的溫度值,並依該些溫度值對該些顯示區塊的顯示資料進行一數值調整運算,從而提升該OLED面板之畫面顯示品質。One purpose of the present invention is to disclose a method for driving an OLED panel, which can measure the temperature values of a plurality of display blocks of an OLED panel by means of a temperature sensor array, and control the display blocks according to these temperature values. A numerical adjustment operation is performed on the display data, thereby improving the image display quality of the OLED panel.
本發明之另一目的在於揭露一種OLED顯示器,其可藉由前述的OLED面板驅動方法提升其畫面顯示品質。Another object of the present invention is to disclose an OLED display, which can improve its image display quality by the aforementioned OLED panel driving method.
本發明之又一目的在於揭露一種資訊處理裝置,其可藉由前述的OLED顯示器提升其畫面顯示品質。Another object of the present invention is to disclose an information processing device, which can improve the image display quality of the aforementioned OLED display.
為達上述目的,一種OLED面板驅動方法乃被提出,其包括:To achieve the above purpose, a method for driving an OLED panel is proposed, which includes:
在一OLED面板中設置一溫度感測器陣列;disposing a temperature sensor array in an OLED panel;
依該溫度感測器陣列感測到之一溫度陣列對一幀顯示資料進行一補償運算以產生一幀輸出顯示資料;以及performing a compensation operation on a frame of display data according to a temperature array sensed by the temperature sensor array to generate a frame of output display data; and
依該幀輸出顯示資料驅動該OLED面板。The OLED panel is driven by outputting display data according to the frame.
在一實施例中,該補償運算包括:In one embodiment, the compensation operation includes:
對該溫度陣列進行一溫度-補償係數轉換運算以產生一補償係數陣列;以及performing a temperature-compensation coefficient conversion operation on the temperature array to generate a compensation coefficient array; and
依該補償係數陣列對該幀顯示資料進行一加權運算以產生該幀輸出顯示資料。A weighting operation is performed on the frame of display data according to the compensation coefficient array to generate the frame of output display data.
在一實施例中,該溫度感測器陣列中之各溫度感測器係各與該OLED面板中之至少一OLED像素相對應。In one embodiment, each temperature sensor in the temperature sensor array corresponds to at least one OLED pixel in the OLED panel.
在一實施例中,該補償運算包括:In one embodiment, the compensation operation includes:
利用一記憶體預存與多個不同溫度對應之多個伽瑪對照表;以及Utilizing a memory to pre-store a plurality of gamma comparison tables corresponding to a plurality of different temperatures; and
將該溫度陣列中之各元素的溫度值各指向所述多個伽瑪對照表中之一對應之伽瑪對照表,並依該些對應之伽瑪對照表將該幀顯示資料轉換成該幀輸出顯示資料。Point the temperature values of each element in the temperature array to a corresponding gamma comparison table in one of the plurality of gamma comparison tables, and convert the frame display data into the frame according to the corresponding gamma comparison tables Output display data.
為達上述目的,本發明進一步提出一種OLED顯示器,其具有一OLED模組及驅動該OLED模組之一控制電路,其中,該OLED模組具有一OLED面板及位於該OLED面板下方之一溫度感測器陣列,該控制電路係用以執行該OLED面板之一驅動程序,該驅動程序包括:To achieve the above purpose, the present invention further proposes an OLED display, which has an OLED module and a control circuit for driving the OLED module, wherein the OLED module has an OLED panel and a temperature sensor located below the OLED panel. A tester array, the control circuit is used to execute a driver program of the OLED panel, the driver program includes:
對該溫度陣列進行一溫度-補償係數轉換運算以產生一補償係數陣列;以及performing a temperature-compensation coefficient conversion operation on the temperature array to generate a compensation coefficient array; and
依該幀輸出顯示資料驅動該OLED面板。The OLED panel is driven by outputting display data according to the frame.
在一實施例中,該補償運算包括:In one embodiment, the compensation operation includes:
對該溫度陣列進行一溫度-補償係數轉換運算以產生一補償係數陣列;以及performing a temperature-compensation coefficient conversion operation on the temperature array to generate a compensation coefficient array; and
依該補償係數陣列對該幀顯示資料進行一加權運算以產生該幀輸出顯示資料。A weighting operation is performed on the frame of display data according to the compensation coefficient array to generate the frame of output display data.
在一實施例中,該溫度感測器陣列中之各溫度感測器係各與該OLED面板中之至少一OLED像素相對應。In one embodiment, each temperature sensor in the temperature sensor array corresponds to at least one OLED pixel in the OLED panel.
在一實施例中,該補償運算包括:In one embodiment, the compensation operation includes:
利用一記憶體預存與多個不同溫度對應之多個伽瑪對照表;以及Utilizing a memory to pre-store a plurality of gamma comparison tables corresponding to a plurality of different temperatures; and
將該溫度陣列中之各元素的溫度值各指向所述多個伽瑪對照表中之一對應之伽瑪對照表,並依該些對應之伽瑪對照表將該幀顯示資料轉換成該幀輸出顯示資料。Point the temperature values of each element in the temperature array to a corresponding gamma comparison table in one of the plurality of gamma comparison tables, and convert the frame display data into the frame according to the corresponding gamma comparison tables Output display data.
為達上述目的,本發明進一步提出一種資訊處理裝置,其具有一中央處理單元及如前述之OLED顯示器,其中,該中央處理單元係用以與該OLED顯示器通信。To achieve the above purpose, the present invention further proposes an information processing device, which has a central processing unit and the aforementioned OLED display, wherein the central processing unit is used to communicate with the OLED display.
在可能的實施例中,所述之資訊處理裝置可為智慧型手機、平板電腦、筆記型電腦、智慧型手錶或門禁裝置。In a possible embodiment, the information processing device may be a smart phone, a tablet computer, a notebook computer, a smart watch or an access control device.
為使 貴審查委員能進一步瞭解本發明之結構、特徵及其目的,茲附以圖式及較佳具體實施例之詳細說明如後。In order to enable your review committee members to further understand the structure, features and purpose of the present invention, drawings and detailed descriptions of preferred specific embodiments are hereby attached.
請參考圖1至3,其中,圖1繪示本發明之資訊處理裝置之一實施例的方塊圖;圖2繪示圖1中的OLED顯示器的俯視示意圖;以及圖3繪示圖1中的OLED顯示器的側視示意圖。如圖1至3所示,一資訊處理裝置10,可為一智慧型手機、一平板電腦、一筆記型電腦、一智慧型手錶或一門禁裝置,包括一OLED顯示器12以及一中央處理單元14,其中,OLED顯示器12包括由複數個溫度感測器110組成之一溫度感測器陣列、一OLED面板200以及一濾光件300,其中,該溫度感測器陣列係用以偵測OLED面板200的溫度分佈;OLED面板200包括一顯示層210以及一電路層220,顯示層210配置於該溫度感測器陣列上方,電路層220連接於顯示層210且包括一控制電路(未繪示);以及濾光件300配置於OLED面板200上方以提供一(R、G、B)彩色濾光作用。另外,中央處理單元14係用以與OLED顯示器12通信。Please refer to FIGS. 1 to 3 , wherein FIG. 1 shows a block diagram of an embodiment of an information processing device of the present invention; FIG. 2 shows a schematic top view of the OLED display in FIG. 1 ; Schematic side view of an OLED display. As shown in Figures 1 to 3, an
詳細而言,如圖2所示,在此實施例中,該些溫度感測器110的數量是九個,且依據九宮格形式平均配置而形成矩陣的樣態,但依據OLED面板200實際的校正需求,溫度感測器110的數量也可以少於九個或多於九個,本發明對此不加以限制。亦即,該溫度感測器陣列中之各溫度感測器110係各與OLED面板200之顯示層210中之至少一OLED像素相對應。藉此,該溫度感測器陣列即可偵測OLED面板200之不同區域的溫度值。In detail, as shown in FIG. 2 , in this embodiment, the number of these
另外,雖然在本實施例中該溫度感測器陣列係設置在顯示層210下方,但本發明並不以此為限,其亦可整合在顯示層210中。In addition, although the temperature sensor array is disposed under the
於操作時,電路層220內之所述控制電路會執行OLED面板200之一驅動程序,該驅動程序包括:During operation, the control circuit in the
(一)所述控制電路依該溫度感測器陣列感測到之一溫度陣列對一幀顯示資料進行一補償運算以產生一幀輸出顯示資料;以及(1) The control circuit performs a compensation operation on a frame of display data according to a temperature array sensed by the temperature sensor array to generate a frame of output display data; and
(二)所述控制電路依該幀輸出顯示資料驅動OLED面板200。(2) The control circuit outputs display data to drive the
詳細而言,在一實施例中,該補償運算包括兩個步驟:1.對該溫度陣列進行一溫度-補償係數轉換運算以產生一補償係數陣列,其中該溫度-補償係數轉換運算可利用一預設公式或一查找表實現;以及2.依該補償係數陣列對該幀顯示資料進行一加權運算以產生該幀輸出顯示資料。在另一實施例中,該補償運算包括:1.利用一記憶體(未示於圖中)預存與多個不同溫度對應之多個伽瑪對照表;以及2.將該溫度陣列中之各元素的溫度值各指向所述多個伽瑪對照表中之一對應之伽瑪對照表,並依該些對應之伽瑪對照表將該幀顯示資料轉換成該幀輸出顯示資料。In detail, in one embodiment, the compensation operation includes two steps: 1. Perform a temperature-compensation coefficient conversion operation on the temperature array to generate a compensation coefficient array, wherein the temperature-compensation coefficient conversion operation can use a Realized by a preset formula or a look-up table; and 2. performing a weighting operation on the frame of display data according to the compensation coefficient array to generate the frame of output display data. In another embodiment, the compensation operation includes: 1. using a memory (not shown in the figure) to pre-store a plurality of gamma comparison tables corresponding to a plurality of different temperatures; and 2. each of the temperature arrays The temperature values of the elements each point to a corresponding gamma comparison table among the plurality of gamma comparison tables, and the frame display data is converted into the frame output display data according to the corresponding gamma comparison tables.
依上述的說明可知本發明揭示了一種OLED面板驅動方法。請參考圖4,其繪示本發明之OLED面板驅動方之一實施例的流程圖。如圖4所示,該方法包括以下步驟:在一OLED面板中設置一溫度感測器陣列(步驟a);依該溫度感測器陣列感測到之一溫度陣列對一幀顯示資料進行一補償運算以產生一幀輸出顯示資料(步驟b);以及依該幀輸出顯示資料驅動該OLED面板(步驟c)。According to the above description, it can be seen that the present invention discloses a method for driving an OLED panel. Please refer to FIG. 4 , which shows a flow chart of an embodiment of the OLED panel driver of the present invention. As shown in Figure 4, the method comprises the following steps: arranging a temperature sensor array in an OLED panel (step a); performing a frame display data according to a temperature array sensed by the temperature sensor array Compensation operation to generate a frame of output display data (step b); and drive the OLED panel according to the frame of output display data (step c).
在步驟a中,該溫度感測器陣列中之各溫度感測器係各與該OLED面板中之至少一OLED像素相對應。In step a, each temperature sensor in the temperature sensor array corresponds to at least one OLED pixel in the OLED panel.
在步驟b中,該補償運算之一實施例包括:對該溫度陣列進行一溫度-補償係數轉換運算以產生一補償係數陣列,其中該溫度-補償係數轉換運算可利用一預設公式或一查找表實現;以及依該補償係數陣列對該幀顯示資料進行一加權運算以產生該幀輸出顯示資料。該補償運算之另一實施例包括:利用一記憶體預存與多個不同溫度對應之多個伽瑪對照表;以及將該溫度陣列中之各元素的溫度值各指向所述多個伽瑪對照表中之一對應之伽瑪對照表,並依該些對應之伽瑪對照表將該幀顯示資料轉換成該幀輸出顯示資料。In step b, an embodiment of the compensation operation includes: performing a temperature-compensation coefficient conversion operation on the temperature array to generate a compensation coefficient array, wherein the temperature-compensation coefficient conversion operation can use a preset formula or a search table realization; and performing a weighting operation on the frame display data according to the compensation coefficient array to generate the frame output display data. Another embodiment of the compensation operation includes: using a memory to pre-store a plurality of gamma comparison tables corresponding to a plurality of different temperatures; and pointing the temperature values of each element in the temperature array to the plurality of gamma comparison tables One of the corresponding gamma comparison tables in the table, and convert the display data of the frame into the output display data of the frame according to the corresponding gamma comparison tables.
請參考圖5至圖8,其中,圖5繪示當圖3中的顯示層210的各個顯示區塊對應不同溫度時的示意圖;圖6繪示圖5的顯示層210中各個顯示區塊之不均勻發光亮度的示意圖;圖7繪示本發明所產生之一對應補償係數陣列的示意圖;以及圖8繪示圖6中之顯示層210中各個顯示區塊之不均勻發光亮度經圖7的補償係數陣列加權處理後呈現均勻發光亮度的示意圖。Please refer to FIG. 5 to FIG. 8, wherein FIG. 5 shows a schematic diagram when each display block of the
具體而言,在本實施例中,顯示層210包括九個顯示區塊212,該些顯示區塊212的數量對應於該些溫度感測器110的數量。透過這樣的配置,OLED顯示器12即可透過該些溫度感測器110對應偵測該些顯示區塊212的溫度。Specifically, in this embodiment, the
如圖5所示,各該顯示區塊212可能有不同的分佈,例如自九宮格左下角的該顯示區塊212沿著對角線方向朝右上移動時,各該顯示區塊212分別具有第一溫度T1、第二溫度T2、第三溫度T3、第四溫度T4及第五溫度T5,且以第一溫度T1 < 第二溫度T2 < 第三溫度T3 < 第四溫度 T4 < 第五溫度T5為例。由於通過有機發光二極體的電流量與溫度彼此正相關,因此,當該控制電路驅使顯示層210發光時,第五溫度T5的顯示區塊212在未經校正的情況下會具有較高的亮度,其情形如圖6所示。As shown in Figure 5, each of the display blocks 212 may have different distributions. For example, when the
此時,該些溫度感測器110在測得該些顯示區塊212的溫度值後將該些溫度值傳遞至該控制電路。之後,該控制電路會依據該些溫度值對一幀顯示資料進行上述的補償運算以產生一幀輸出顯示資料,以對顯示層210發出的光進行補償校正。如圖7所示,該控制電路可產生一補償係數陣列,其包含多個補償係數310,以分別對該些顯示區塊212的顯示資料進行加權運算,其中,補償係數為小於或等於1的正數。At this time, the
更進一步而言,若將圖5中第一溫度T1的該顯示區塊212對應的亮度定義為1單位,則該第二溫度T2、該第三溫度T3、該第四溫度T4及該第五溫度T5的各該顯示區塊212對應的亮度例如是1.25單位、1.5單位、1.75單位以及2單位,此時可將對應最左下該顯示區塊212的補償係數310設為最大值1,並將其餘八個補償係數310分別設定為上述單位倍率的倒數,即(W1,W2,W3,W4,W5) = (1.00, 0.8, 0.67, 0.57, 0.5);或者可透過一預設的查找表,其記錄溫度與補償係數的對應關係,來產生該些顯示區塊212的補償係數310。如此一來,在各該顯示區塊212的顯示資料經過對應的各該補償係數310的處理後,該顯示層210的輸出光的亮度將均勻地校正為1單位,從而提高使用者的視覺感受。Furthermore, if the luminance corresponding to the
另外,如前所述,在進行該補償運算時,本發明亦可先利用一記憶體預存與多個不同溫度對應之多個伽瑪對照表,然後將該溫度陣列中之各元素的溫度值各指向所述多個伽瑪對照表中之一對應之伽瑪對照表,並依該些對應之伽瑪對照表將該幀顯示資料轉換成該幀輸出顯示資料,從而使OLED面板具有一均勻的顯示亮度。In addition, as mentioned above, when performing the compensation calculation, the present invention can also use a memory to pre-store a plurality of gamma comparison tables corresponding to a plurality of different temperatures, and then use the temperature value of each element in the temperature array each point to a corresponding gamma comparison table among the plurality of gamma comparison tables, and convert the frame display data into the frame output display data according to the corresponding gamma comparison tables, so that the OLED panel has a uniform display brightness.
依上述的說明可知,本發明可提供以下的功效:According to the above description, the present invention can provide the following effects:
1.本發明的OLED面板驅動方法可藉由一溫度感測器陣列量測一OLED面板的複數個顯示區塊的溫度值,並依該些溫度值對該些顯示區塊的顯示資料進行一數值調整運算,從而提升該OLED面板之畫面顯示品質。1. The OLED panel driving method of the present invention can measure the temperature values of a plurality of display blocks of an OLED panel by means of a temperature sensor array, and perform a process on the display data of these display blocks according to these temperature values. Numerical adjustment operations are performed to improve the image display quality of the OLED panel.
2.本發明的OLED顯示器可藉由前述的OLED面板驅動方法提升其畫面顯示品質。2. The OLED display of the present invention can improve its picture display quality by the above OLED panel driving method.
3.本發明的資訊處理裝置可藉由前述的OLED顯示器提升其畫面顯示品質。3. The image display quality of the information processing device of the present invention can be improved by the aforementioned OLED display.
本案所揭示者,乃較佳實施例,舉凡局部之變更或修飾而源於本案之技術思想而為熟習該項技藝之人所易於推知者,俱不脫本案之專利權範疇。What is disclosed in this case is a preferred embodiment. For example, any partial changes or modifications derived from the technical ideas of this case and easily deduced by those who are familiar with the technology are within the scope of the patent right of this case.
綜上所陳,本案無論目的、手段與功效,皆顯示其迥異於習知技術,且其首先發明合於實用,確實符合發明之專利要件,懇請 貴審查委員明察,並早日賜予專利俾嘉惠社會,是為至禱。To sum up, regardless of the purpose, means and efficacy of this case, it shows that it is very different from the conventional technology, and its first invention is practical, and it does meet the patent requirements of the invention. I implore your review committee to understand it clearly and grant a patent as soon as possible. Society is for the Most Prayer.
步驟a:在一OLED面板中設置一溫度感測器陣列 步驟b:依該溫度感測器陣列感測到之一溫度陣列對一幀顯示資料進行一補償運算以產生一幀輸出顯示資料 步驟c:依該幀輸出顯示資料驅動該OLED面板 10:資訊處理裝置 12:OLED顯示器 14:中央處理單元 110:溫度感測器 200:OLED面板 210:顯示層 212:顯示區塊 220:電路層 300:濾光件 310:補償係數 Step a: Setting up a temperature sensor array in an OLED panel Step b: performing a compensation operation on a frame of display data according to a temperature array sensed by the temperature sensor array to generate a frame of output display data Step c: output display data according to the frame to drive the OLED panel 10: Information processing device 12:OLED display 14: Central processing unit 110: temperature sensor 200: OLED panel 210: display layer 212: Display block 220: circuit layer 300: filter 310: compensation coefficient
圖1繪示本發明之資訊處理裝置之一實施例的方塊圖。 圖2繪示圖1中的OLED顯示器的俯視示意圖。 圖3繪示圖1中的OLED顯示器的側視示意圖。 圖4繪示本發明之OLED面板驅動方之一實施例的流程圖。 圖5繪示當圖3中的顯示層的各個顯示區塊對應不同溫度時的示意圖。 圖6繪示圖5的顯示層中各個顯示區塊之不均勻發光亮度的示意圖。 圖7繪示本發明所產生之一對應補償係數陣列的示意圖。 圖8繪示圖6中之顯示層中各個顯示區塊之不均勻發光亮度經圖7的補償係數陣列加權處理後呈現均勻發光亮度的示意圖。 FIG. 1 shows a block diagram of an embodiment of an information processing device of the present invention. FIG. 2 is a schematic top view of the OLED display in FIG. 1 . FIG. 3 is a schematic side view of the OLED display in FIG. 1 . FIG. 4 shows a flowchart of an embodiment of an OLED panel driver of the present invention. FIG. 5 is a schematic diagram when each display area of the display layer in FIG. 3 corresponds to different temperatures. FIG. 6 is a schematic diagram of uneven luminous brightness of each display area in the display layer of FIG. 5 . FIG. 7 is a schematic diagram of a corresponding compensation coefficient array generated by the present invention. FIG. 8 is a schematic diagram showing uniform luminous luminance after the uneven luminous luminance of each display block in the display layer in FIG. 6 is weighted by the compensation coefficient array in FIG. 7 .
步驟a:在一OLED面板中設置一溫度感測器陣列 Step a: Setting up a temperature sensor array in an OLED panel
步驟b:依該溫度感測器陣列感測到之一溫度陣列對一幀顯示資料進行一補償運算以產生一幀輸出顯示資料 Step b: performing a compensation operation on a frame of display data according to a temperature array sensed by the temperature sensor array to generate a frame of output display data
步驟c:依該幀輸出顯示資料驅動該OLED面板 Step c: output display data according to the frame to drive the OLED panel
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