Pixel Circuit for Organic Light-Emitting Diode-on-Silicon Microdisplays Using the Source Follower Structure

Abstract

We study the relaxation properties of the voter model with i.i.d. random bias. We prove under mild conditions that the disorder-averaged relaxation of this biased random voter model is faster than a stretched exponential with exponent d/(d + α), where 0 < α 2 depends on the transition rates of the non-biased voter model. Under an additional assumption, we show that the above upper bound is optimal. The main ingredient of our proof is a result of Donsker and Varadhan. § Postdoctoraal onderzoeker FWO. Bursaal IWT. 0305-4470/99/447653+12$30.00

P‐27: A Novel Pixel Circuit with Threshold Voltage Variation Compensation in Three‐Dimensional AMOLED on Silicon Microdisplay

“…With the advantages of high contrast ratio, fast optical response time, wide view angle, low power consumption and portable feature, organic light emitting diode on silicon (OLEDoS) is an advantageous choice to achieve high image quality microdisplays [1][2][3][4][5][6]. 0.5-inch Quad-VGA and 1.25-inch wide-Quad-XGA OLEDoS microdisplays were developed in recent years [6].…”

“…By adding a switching transistor, it is ensured that no current flows through the OLED in initialization. The performance of the proposed pixel circuit is compared with the traditional 2T1C one based on simulation [1] . show the schematic and timing diagram of the propose 4T1C pixel circuit scheme, respectively.…”

P‐53: A Novel Pixel Circuit Providing Expanded Input Voltage Range for OLEDoS Microdisplays

“…OLEDoS microdisplays are implemented on the single-crystalline silicon substrates using a standard complementary metal oxide semiconductor (CMOS) process. Therefore, the pixel blocks and the other control blocks such as gate driver, source driver, DC-DC converter, etc., can be integrated into a single chip of smaller than 1 inch [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

“…Generally, two approaches were adopted to build the simple pixel circuits in previous works [7][8][9][10][11][12][13][14][15][16]. The first one is current programming.…”

“…To overcome these problems, several pixel circuit designs have been proposed [8][9][10], [16][17][18]. Among them, some failed to compensate the threshold voltage deviation of the driving transistor, and also their data voltage ranges were small [8][9][10], which resulted in poor control on the emission current. The other pixel circuits adopted compensation schemes and data voltage expanding technologies, but their input voltage ranges were still too small to realize a good control on the emission current.…”