TWI653620B - Electro-phoretic display apparatus - Google Patents
Electro-phoretic display apparatus Download PDFInfo
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Abstract
一種電泳式顯示器裝置包括電泳式顯示面板以及驅動電路。電泳式顯示面板包括顯示區域以及邊框區域。驅動電路耦接至電泳式顯示面板。驅動電路依據第一電壓驅動顯示區域顯示影像畫面。驅動電路依據第二電壓驅動邊框區域維持顯示白色邊框或黑色邊框。An electrophoretic display device includes an electrophoretic display panel and a driving circuit. The electrophoretic display panel includes a display area and a bezel area. The driving circuit is coupled to the electrophoretic display panel. The driving circuit displays the image frame according to the first voltage driving display area. The driving circuit maintains a white border or a black border according to the second voltage driving frame area.
Description
本發明是有關於一種顯示器裝置，且特別是有關於一種電泳式(Electro-Phoretic)顯示器裝置。The present invention relates to a display device, and more particularly to an electrophoretic (Electro-Phoretic) display device.
一般而言，電泳式顯示器裝置的應用通常可分為兩種。一種為將電泳式顯示器面板連接至預設的驅動電壓，以使其畫面能隨著驅動電壓的變化閃黑與閃白。另一種應用為將電泳式顯示器面板的邊框區域連接至共電極電壓，使其顯示的顏色不變，維持預設的邊框顏色。後者雖然可以減少系統端的電路複雜程度，但是由於將邊框區域連接至共電極電壓容易形成灰框(Gray Border)現象，造成失真。In general, the application of electrophoretic display devices can generally be divided into two types. One is to connect the electrophoretic display panel to a preset driving voltage so that its picture can flash and flash as the driving voltage changes. Another application is to connect the frame area of the electrophoretic display panel to the common electrode voltage so that the displayed color does not change, maintaining the preset border color. Although the latter can reduce the complexity of the circuit on the system side, it is easy to form a Gray Border phenomenon by connecting the frame area to the common electrode voltage, causing distortion.
本發明提供一種電泳式顯示器裝置，可改善其邊框區域的失真現象。The invention provides an electrophoretic display device which can improve the distortion phenomenon of the frame region thereof.
本發明的電泳式顯示器裝置包括電泳式顯示面板以及驅動電路。電泳式顯示面板包括顯示區域以及邊框區域。驅動電路耦接至電泳式顯示面板。驅動電路用以依據第一電壓驅動顯示區域顯示影像畫面。驅動電路依據第二電壓驅動邊框區域維持顯示白色邊框或黑色邊框。The electrophoretic display device of the present invention includes an electrophoretic display panel and a driving circuit. The electrophoretic display panel includes a display area and a bezel area. The driving circuit is coupled to the electrophoretic display panel. The driving circuit is configured to display the image frame by driving the display area according to the first voltage. The driving circuit maintains a white border or a black border according to the second voltage driving frame area.
在本發明的一實施例中，上述的驅動電路依據第一電壓來產生第二電壓。In an embodiment of the invention, the driving circuit generates a second voltage according to the first voltage.
在本發明的一實施例中，上述的驅動電路依據第二電壓驅動邊框區域維持顯示白色邊框。驅動電路調升第一電壓的絕對值來產生第二電壓的絕對值，並且第二電壓的絕對值高於第一電壓的絕對值。In an embodiment of the invention, the driving circuit maintains displaying a white border according to the second voltage driving frame region. The drive circuit boosts the absolute value of the first voltage to generate an absolute value of the second voltage, and the absolute value of the second voltage is higher than the absolute value of the first voltage.
在本發明的一實施例中，上述的驅動電路包括運算放大器、第一電阻以及第二電阻。運算放大器具有第一輸入端、第二輸入端以及輸出端。運算放大器的第一輸入端接收第一電壓。運算放大器的輸出端輸出第二電壓。第一電阻具有第一端以及第二端。第一電阻的第一端耦接至運算放大器的輸出端。第一電阻的第二端耦接至運算放大器的第二輸入端。第二電阻具有第一端以及第二端。第二電阻的第一端耦接至運算放大器的第二輸入端。第二電阻的第二端耦接至接地電壓。In an embodiment of the invention, the driving circuit includes an operational amplifier, a first resistor, and a second resistor. The operational amplifier has a first input, a second input, and an output. A first input of the operational amplifier receives the first voltage. The output of the operational amplifier outputs a second voltage. The first resistor has a first end and a second end. The first end of the first resistor is coupled to the output of the operational amplifier. The second end of the first resistor is coupled to the second input of the operational amplifier. The second resistor has a first end and a second end. The first end of the second resistor is coupled to the second input of the operational amplifier. The second end of the second resistor is coupled to the ground voltage.
在本發明的一實施例中，上述的驅動電路依據第二電壓驅動邊框區域維持顯示黑色邊框。驅動電路調降第一電壓的絕對值來產生第二電壓的絕對值，並且第二電壓的絕對值低於第一電壓的絕對值。In an embodiment of the invention, the driving circuit maintains a black border according to the second voltage driving frame region. The drive circuit reduces the absolute value of the first voltage to generate an absolute value of the second voltage, and the absolute value of the second voltage is lower than the absolute value of the first voltage.
在本發明的一實施例中，上述的驅動電路包括第一電阻以及第二電阻。第一電阻具有第一端以及第二端。第一電阻的第一端接收第一電壓。第一電阻的第二端輸出第二電壓。第二電阻具有第一端以及第二端。第二電阻的第一端耦接至第一電阻的第二端。第二電阻的第二端耦接至接地電壓。In an embodiment of the invention, the driving circuit includes a first resistor and a second resistor. The first resistor has a first end and a second end. The first end of the first resistor receives the first voltage. The second end of the first resistor outputs a second voltage. The second resistor has a first end and a second end. The first end of the second resistor is coupled to the second end of the first resistor. The second end of the second resistor is coupled to the ground voltage.
在本發明的一實施例中，上述的第一電壓以及第二電壓為負電壓。In an embodiment of the invention, the first voltage and the second voltage are negative voltages.
在本發明的一實施例中，上述的第一電壓為顯示區域的一共電極電壓。In an embodiment of the invention, the first voltage is a common electrode voltage of the display area.
在本發明的一實施例中，上述的驅動電路設置在電泳式顯示面板之上。In an embodiment of the invention, the driving circuit is disposed on the electrophoretic display panel.
在本發明的一實施例中，上述的驅動電路設置在電泳式顯示面板之外。In an embodiment of the invention, the driving circuit is disposed outside the electrophoretic display panel.
基於上述，在本發明的範例實施例中，驅動電路依據第二電壓來驅動電泳式顯示面板的邊框區域，可改善其失真現象。Based on the above, in an exemplary embodiment of the present invention, the driving circuit drives the frame region of the electrophoretic display panel according to the second voltage, thereby improving the distortion phenomenon.
為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。The above described features and advantages of the invention will be apparent from the following description.
圖1繪示本發明一實施例之電泳式顯示器裝置的概要示意圖。請參考圖1，本實施例之電泳式顯示器裝置100包括電泳式顯示面板110以及驅動電路120。電泳式顯示面板110包括顯示區域AA以及邊框區域BD。驅動電路120耦接至電泳式顯示面板110。驅動電路120依據第一電壓V1驅動顯示區域AA顯示影像畫面。驅動電路120依據第二電壓V2驅動邊框區域BD維持顯示白色邊框或黑色邊框。在本實施例中，第一電壓V1例如是用來驅動顯示區域AA顯示影像畫面的共電極電壓。FIG. 1 is a schematic diagram of an electrophoretic display device according to an embodiment of the invention. Referring to FIG. 1 , the electrophoretic display device 100 of the present embodiment includes an electrophoretic display panel 110 and a driving circuit 120 . The electrophoretic display panel 110 includes a display area AA and a bezel area BD. The driving circuit 120 is coupled to the electrophoretic display panel 110. The driving circuit 120 drives the display area AA to display an image screen according to the first voltage V1. The driving circuit 120 drives the frame area BD to maintain a white border or a black border according to the second voltage V2. In the present embodiment, the first voltage V1 is, for example, a common electrode voltage for driving the display area AA to display an image screen.
在本實施例中，驅動電路120例如是獨立設置在電泳式顯示面板110之外的外部電路。或者，在一實施例中，驅動電路120例如是設置在電泳式顯示面板110上的周邊電路配置區域(未繪示) 的內部電路。本發明對驅動電路120的配置位置並不加以限制。In the present embodiment, the drive circuit 120 is, for example, an external circuit that is independently disposed outside the electrophoretic display panel 110. Alternatively, in an embodiment, the driving circuit 120 is, for example, an internal circuit disposed in a peripheral circuit configuration area (not shown) on the electrophoretic display panel 110. The present invention does not limit the arrangement position of the driving circuit 120.
圖2繪示本發明一實施例之驅動電路內部電路結構的概要示意圖。圖3繪示圖2實施例之第一電壓以及第二電壓的波形示意圖。請參考圖2及圖3，本實施例之驅動電路220例如是依據第一電壓V1來產生第二電壓V2。第一電壓V1例如用來驅動顯示區域AA顯示影像畫面的共電極電壓。2 is a schematic diagram showing the internal circuit structure of a driving circuit according to an embodiment of the present invention. 3 is a schematic diagram showing waveforms of a first voltage and a second voltage in the embodiment of FIG. 2. Referring to FIG. 2 and FIG. 3, the driving circuit 220 of this embodiment generates the second voltage V2 according to the first voltage V1, for example. The first voltage V1 is used, for example, to drive the display region AA to display the common electrode voltage of the image frame.
在本實施例中，驅動電路220包括運算放大器222、第一電阻R1以及第二電阻R2。運算放大器222具有第一輸入端(非反相端)、第二輸入端(反相端)以及輸出端。運算放大器222的第一輸入端接收第一電壓V1。運算放大器222的第二輸入端耦接至第一電阻的第二端。運算放大器222的輸出端輸出第二電壓V2。第一電阻R1具有第一端以及第二端。第一電阻R1的第一端耦接至運算放大器222的輸出端。第一電阻R1的第二端耦接至運算放大器222的第二輸入端。第二電阻R2具有第一端以及第二端。第二電阻R2的第一端耦接至運算放大器222的第二輸入端。第二電阻R2的第二端耦接至接地電壓GND。In the embodiment, the driving circuit 220 includes an operational amplifier 222, a first resistor R1, and a second resistor R2. The operational amplifier 222 has a first input (non-inverting terminal), a second input (inverting terminal), and an output. A first input of operational amplifier 222 receives a first voltage V1. The second input of the operational amplifier 222 is coupled to the second end of the first resistor. The output of the operational amplifier 222 outputs a second voltage V2. The first resistor R1 has a first end and a second end. The first end of the first resistor R1 is coupled to the output of the operational amplifier 222. The second end of the first resistor R1 is coupled to the second input of the operational amplifier 222. The second resistor R2 has a first end and a second end. The first end of the second resistor R2 is coupled to the second input of the operational amplifier 222. The second end of the second resistor R2 is coupled to the ground voltage GND.
在本實施例中，驅動電路220的運算放大器222例如是同相放大器的電路組態。運算放大器222將第二電壓V2回授至其第二輸入端，以使第一電壓V1以及第二電壓V2兩者同相。經過此同相放大器，第一電壓V1的絕對值可被調升至第二電壓V2的絕對值，藉以讓電泳粒子維持在其預設位置。因此，在本實施例中，驅動電路220調升第一電壓V1的絕對值來產生第二電壓V2的絕對值，因此第二電壓V2的絕對值高於第一電壓V1的絕對值。舉例而言，在本實施例中，驅動電路220例如將負2伏特的第一電壓V1調整至負3伏特的第二電壓V2。第一電壓V1以及第二電壓V2為負電壓，第二電壓V2的絕對值高於第一電壓V1的絕對值。在本實施例中，負2伏特的第一電壓V1以及負3伏特的第二電壓V2僅用以例示說明，其電壓值不用以限定本發明。In the present embodiment, the operational amplifier 222 of the drive circuit 220 is, for example, a circuit configuration of a non-inverting amplifier. The operational amplifier 222 returns the second voltage V2 to its second input such that both the first voltage V1 and the second voltage V2 are in phase. Through this non-inverting amplifier, the absolute value of the first voltage V1 can be raised to the absolute value of the second voltage V2, thereby maintaining the electrophoretic particles at their preset positions. Therefore, in the present embodiment, the drive circuit 220 raises the absolute value of the first voltage V1 to generate an absolute value of the second voltage V2, and thus the absolute value of the second voltage V2 is higher than the absolute value of the first voltage V1. For example, in the present embodiment, the driving circuit 220 adjusts, for example, the first voltage V1 of minus 2 volts to the second voltage V2 of minus 3 volts. The first voltage V1 and the second voltage V2 are negative voltages, and the absolute value of the second voltage V2 is higher than the absolute value of the first voltage V1. In the present embodiment, the first voltage V1 of minus 2 volts and the second voltage V2 of minus 3 volts are for illustrative purposes only, and the voltage values thereof are not limited to the invention.
在本實施例中，驅動電路220例如依據第二電壓V2驅動邊框區域BD維持顯示白色邊框。當電泳式顯示面板110的邊框區域BD被驅動並且顯示為白色時，驅動電路220依據第一電壓V1來輸出第二電壓V2給邊框區域BD，例如將負2伏特的第一電壓V1調整至負3伏特的第二電壓V2。藉由第一電壓V1以及第二電壓V2之間的壓差，讓白色的電泳粒子維持在其預設位置，從而邊框區域BD維持顯示白色邊框，不失真。因此，維持顯示白色邊框的邊框區域BD可使背景為白色的顯示區域AA的可視區域之視覺效果變大。In the present embodiment, the driving circuit 220 drives the frame area BD to maintain a white border, for example, according to the second voltage V2. When the frame area BD of the electrophoretic display panel 110 is driven and displayed in white, the driving circuit 220 outputs the second voltage V2 to the frame area BD according to the first voltage V1, for example, adjusting the first voltage V1 of minus 2 volts to negative. The second voltage V2 of 3 volts. The white electrophoretic particles are maintained at their preset positions by the pressure difference between the first voltage V1 and the second voltage V2, so that the bezel area BD maintains a white border and is not distorted. Therefore, maintaining the border area BD displaying the white border can increase the visual effect of the visible area of the display area AA whose background is white.
圖4繪示本發明另一實施例之驅動電路內部電路結構的概要示意圖。圖5繪示圖4實施例之第一電壓以及第二電壓的波形示意圖。請參考圖4及圖5，本實施例之驅動電路320例如是依據第一電壓V1來產生第二電壓V2。第一電壓V1例如用來驅動顯示區域AA顯示影像畫面的共電極電壓。4 is a schematic diagram showing the internal circuit structure of a driving circuit according to another embodiment of the present invention. FIG. 5 is a schematic diagram showing waveforms of a first voltage and a second voltage in the embodiment of FIG. 4. FIG. Referring to FIG. 4 and FIG. 5, the driving circuit 320 of the embodiment generates the second voltage V2 according to the first voltage V1, for example. The first voltage V1 is used, for example, to drive the display region AA to display the common electrode voltage of the image frame.
在本實施例中，驅動電路320包括第一電阻R1以及第二電阻R2。第一電阻R1的第一端接收第一電壓V1。第一電阻R1的第二端輸出第二電壓V2。第二電阻R2具有第一端以及第二端。第二電阻R2的第一端耦接至第一電阻R1的第二端。第二電阻R2的第二端耦接至接地電壓GND。In the embodiment, the driving circuit 320 includes a first resistor R1 and a second resistor R2. The first end of the first resistor R1 receives the first voltage V1. The second end of the first resistor R1 outputs a second voltage V2. The second resistor R2 has a first end and a second end. The first end of the second resistor R2 is coupled to the second end of the first resistor R1. The second end of the second resistor R2 is coupled to the ground voltage GND.
在本實施例中，驅動電路320的第一電阻R1以及第二電阻R2之組合例如是分壓電路的電路組態。第一電阻R1以及第二電阻R2之組合將第一電壓V1分壓以產生第二電壓V2，並且兩者同相。經過此分壓電路，第一電壓V1的絕對值可被調降至第二電壓V2的絕對值，藉以讓電泳粒子維持在其預設位置。因此，在本實施例中，驅動電路320調降第一電壓V1的絕對值來產生第二電壓V2的絕對值，因此第二電壓V2的絕對值低於第一電壓V1的絕對值。舉例而言，在本實施例中，驅動電路320例如將負2伏特的第一電壓V1調整至負1伏特的第二電壓V2。第一電壓V1以及第二電壓V2為負電壓，第二電壓V2的絕對值低於第一電壓V1的絕對值。在本實施例中，負2伏特的第一電壓V1以及負1伏特的第二電壓V2僅用以例示說明，其電壓值不用以限定本發明。In the present embodiment, the combination of the first resistor R1 and the second resistor R2 of the driving circuit 320 is, for example, a circuit configuration of the voltage dividing circuit. The combination of the first resistor R1 and the second resistor R2 divides the first voltage V1 to generate a second voltage V2, and the two are in phase. Through this voltage dividing circuit, the absolute value of the first voltage V1 can be adjusted to the absolute value of the second voltage V2, thereby maintaining the electrophoretic particles at their preset positions. Therefore, in the present embodiment, the drive circuit 320 lowers the absolute value of the first voltage V1 to generate an absolute value of the second voltage V2, and thus the absolute value of the second voltage V2 is lower than the absolute value of the first voltage V1. For example, in the present embodiment, the driving circuit 320 adjusts, for example, the first voltage V1 of minus 2 volts to the second voltage V2 of minus 1 volt. The first voltage V1 and the second voltage V2 are negative voltages, and the absolute value of the second voltage V2 is lower than the absolute value of the first voltage V1. In the present embodiment, the first voltage V1 of minus 2 volts and the second voltage V2 of minus 1 volt are used for illustration only, and the voltage values thereof are not limited to the invention.
在本實施例中，驅動電路320例如依據第二電壓V2驅動邊框區域BD維持顯示黑色邊框。當電泳式顯示面板110的邊框區域BD被驅動並且顯示為黑色時，驅動電路220依據第一電壓V1來輸出第二電壓V2給邊框區域BD，例如將負2伏特的第一電壓V1調整至負1伏特的第二電壓V2。藉由第一電壓V1以及第二電壓V2之間的壓差，讓黑色的電泳粒子維持在其預設位置，從而邊框區域BD維持顯示黑色邊框，不失真。因此，維持顯示黑色邊框的邊框區域BD可使得作為對位區的邊框區域BD可提供明確的位置。In the present embodiment, the driving circuit 320 drives the frame region BD to maintain a black border, for example, according to the second voltage V2. When the frame area BD of the electrophoretic display panel 110 is driven and displayed in black, the driving circuit 220 outputs the second voltage V2 to the frame area BD according to the first voltage V1, for example, adjusting the first voltage V1 of minus 2 volts to negative. A second voltage V2 of 1 volt. The black electrophoretic particles are maintained at their preset positions by the pressure difference between the first voltage V1 and the second voltage V2, so that the bezel area BD maintains a black border and is not distorted. Therefore, maintaining the bezel area BD displaying the black border can provide a clear position for the bezel area BD as the registration area.
綜上所述，在本發明的範例實施例中，驅動電路依據第二電壓來驅動電泳式顯示面板的邊框區域顯示白色邊框或黑色邊框，可避免邊框區域顯示灰色，改善其失真現象。In summary, in the exemplary embodiment of the present invention, the driving circuit drives the frame area of the electrophoretic display panel to display a white border or a black border according to the second voltage, thereby preventing the border area from displaying gray and improving the distortion phenomenon.
雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.
100‧‧‧電泳式顯示器裝置100‧‧‧electrophoretic display device
110‧‧‧電泳式顯示面板110‧‧‧electrophoretic display panel
120、220、320‧‧‧驅動電路120, 220, 320‧‧‧ drive circuit
222‧‧‧運算放大器222‧‧‧Operational Amplifier
AA‧‧‧顯示區域AA‧‧‧ display area
BD‧‧‧邊框區域BD‧‧‧Border area
V1‧‧‧第一電壓V1‧‧‧ first voltage
V2‧‧‧第二電壓V2‧‧‧second voltage
GND‧‧‧接地電壓GND‧‧‧ Grounding voltage
R1‧‧‧第一電阻R1‧‧‧first resistance
R2‧‧‧第二電阻R2‧‧‧second resistance
圖1繪示本發明一實施例之電泳式顯示器裝置的概要示意圖。 圖2繪示本發明一實施例之驅動電路內部電路結構的概要示意圖。 圖3繪示圖2實施例之第一電壓以及第二電壓的波形示意圖。 圖4繪示本發明另一實施例之驅動電路內部電路結構的概要示意圖。 圖5繪示圖4實施例之第一電壓以及第二電壓的波形示意圖。FIG. 1 is a schematic diagram of an electrophoretic display device according to an embodiment of the invention. 2 is a schematic diagram showing the internal circuit structure of a driving circuit according to an embodiment of the present invention. 3 is a schematic diagram showing waveforms of a first voltage and a second voltage in the embodiment of FIG. 2. 4 is a schematic diagram showing the internal circuit structure of a driving circuit according to another embodiment of the present invention. FIG. 5 is a schematic diagram showing waveforms of a first voltage and a second voltage in the embodiment of FIG. 4. FIG.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105139627A TWI653620B (en) | 2016-12-01 | 2016-12-01 | Electro-phoretic display apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| TW105139627A TWI653620B (en) | 2016-12-01 | 2016-12-01 | Electro-phoretic display apparatus |
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| TW201822182A TW201822182A (en) | 2018-06-16 |
| TWI653620B true TWI653620B (en) | 2019-03-11 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW538263B (en) | 2000-08-31 | 2003-06-21 | Seiko Epson Corp | Electrophoretic display |
| TW200819891A (en) | 2006-08-30 | 2008-05-01 | Koninkl Philips Electronics Nv | An improved display device |
| US20080158143A1 (en) | 2006-12-28 | 2008-07-03 | Yeon-Ju Kim | Electrophoretic display apparatus and method for manufacturing the same |
| TWI554999B (en) | 2013-10-10 | 2016-10-21 | Ｌｇ顯示器股份有限公司 | Display device |
-
2016
- 2016-12-01 TW TW105139627A patent/TWI653620B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW538263B (en) | 2000-08-31 | 2003-06-21 | Seiko Epson Corp | Electrophoretic display |
| TW200819891A (en) | 2006-08-30 | 2008-05-01 | Koninkl Philips Electronics Nv | An improved display device |
| US20080158143A1 (en) | 2006-12-28 | 2008-07-03 | Yeon-Ju Kim | Electrophoretic display apparatus and method for manufacturing the same |
| TWI554999B (en) | 2013-10-10 | 2016-10-21 | Ｌｇ顯示器股份有限公司 | Display device |
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| TW201822182A (en) | 2018-06-16 |
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